[Bugme-new] [Bug 10682] New: (net 8139too) dual ethernet system, any reasonable network causes: NETDEV WATCHDOG: ethN: transmit timed out

bugme-daemon at bugzilla.kernel.org bugme-daemon at bugzilla.kernel.org
Sun May 11 16:34:29 PDT 2008


http://bugzilla.kernel.org/show_bug.cgi?id=10682

           Summary: (net 8139too) dual ethernet system, any reasonable
                    network causes: NETDEV WATCHDOG: ethN: transmit timed
                    out
           Product: Drivers
           Version: 2.5
     KernelVersion: 2.6.25.3
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Network
        AssignedTo: jgarzik at pobox.com
        ReportedBy: bkuhn at ebb.org


Latest working kernel version: Unknown
Earliest failing kernel version: 2.6.24
Distribution: Ubuntu
Hardware Environment: eBox-4852
Software Environment: Standard Ubuntu Hardy install, with self-compiled kernel
direct from kernel.org used fakeroot make-kpkg --initrd kernel_image

Problem Description:

I have an eBox-4852 which has two of these ethernet cards in it:
     Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+
(rev 10

As soon as I get both ethernet cards up and running and put any reasonable
load (using the system as a packet-forwarding firewall), one or both of
them fail for a number of minutes.  Eventually, they usually come back up
on their own, at which time the following message appears in the syslog:

kernel: [ 2242.871816] NETDEV WATCHDOG: eth0: transmit timed out
kernel: [ 2245.885704] eth0: Transmit timeout, status 0d 0000 c07f media 10.
kernel: [ 2245.885704] eth0: Tx queue start entry 7227  dirty entry 7223.
kernel: [ 2245.885704] eth0:  Tx descriptor 0 is 0008003c.
kernel: [ 2245.885704] eth0:  Tx descriptor 1 is 0008003c.
kernel: [ 2245.885704] eth0:  Tx descriptor 2 is 0008003c.
kernel: [ 2245.885704] eth0:  Tx descriptor 3 is 00080042. (queue head)
kernel: [ 2245.885704] eth0: link up, 100Mbps, full-duplex, lpa 0x45E1

They are both recognized at boot time to use the 8139too module:

kernel: [   15.531666] 8139too Fast Ethernet driver 0.9.28
kernel: [   15.532287] ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 10
kernel: [   15.532343] PCI: setting IRQ 10 as level-triggered
kernel: [   15.532352] ACPI: PCI Interrupt 0000:00:08.0[A] -> Link [LNKA] ->
GSI 10 (level, low) -> I
RQ 10
kernel: [   15.533338] eth0: RealTek RTL8139 at 0xe800, 44:4d:50:02:e1:cb, IRQ
10
kernel: [   15.533394] eth0:  Identified 8139 chip type 'RTL-8100B/8139D'
kernel: [   15.533817] ACPI: PCI Interrupt Link [LNKD] enabled at IRQ 11
kernel: [   15.533870] PCI: setting IRQ 11 as level-triggered
kernel: [   15.533878] ACPI: PCI Interrupt 0000:00:0b.0[A] -> Link [LNKD] ->
GSI 11 (level, low) -> IRQ 11
kernel: [   15.534759] eth1: RealTek RTL8139 at 0xe400, 44:4d:50:43:41:74, IRQ
11
kernel: [   15.534814] eth1:  Identified 8139 chip type 'RTL-8100B/8139D'

Steps to reproduce:

It's very simple, one needs only to have this box and run both cards with
any amount of reasonable load and it occurs within an hour, usually much
faster.  I read online that sometimes WATCHDOG TIMEOUT means that there is
bad network infrastructure of some sort.  I have tried many different
network topologies, hubs, and cables and it always produces the same
error.  I have also tried all different possible BIOS settings related to
IRQs.

Based on advice from online forums and the like, I have also tried the
following kernel command line settings, in sequence and together in
various ways, and the behavior is still the same:

nosmp
irqpoll
pci=biosirq
pci=irqmasq
pci=routeirq


Here is all the data from the running system:

###############################################################################
/proc/cpuinfo:
processor       : 0
vendor_id       : CentaurHauls
cpu family      : 6
model           : 13
model name      : VIA Eden Processor 1200MHz
stepping        : 0
cpu MHz         : 1196.956
cache size      : 128 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge cmov pat
clflush acpi mmx fxsr sse sse2 tm nx pni est tm2 xtpr rng rng_en ace ace_en
ace2 ace2_en phe phe_en pmm pmm_en
bogomips        : 2395.59
clflush size    : 64
###############################################################################
/proc/interrupts:
           CPU0       
  0:     131574    XT-PIC-XT        timer
  1:        761    XT-PIC-XT        i8042
  2:          0    XT-PIC-XT        cascade
  7:          0    XT-PIC-XT        parport0
  8:          7    XT-PIC-XT        rtc
  9:          0    XT-PIC-XT        acpi
 10:      38862    XT-PIC-XT        uhci_hcd:usb2, eth0
 11:    1151499    XT-PIC-XT        ehci_hcd:usb1, eth1
 14:          0    XT-PIC-XT        pata_via
 15:      16369    XT-PIC-XT        pata_via
NMI:          0   Non-maskable interrupts
TRM:          0   Thermal event interrupts
SPU:          0   Spurious interrupts
ERR:          0
###############################################################################
/proc/iomem:

00000000-0009fbff : System RAM
0009fc00-0009ffff : reserved
000a0000-000bffff : Video RAM area
000c0000-000ce5ff : Video ROM
000f0000-000fffff : System ROM
00100000-1bfbffff : System RAM
  00100000-002f182f : Kernel code
  002f1830-003db41f : Kernel data
  00433000-0048ed9b : Kernel bss
1bfc0000-1bfcdfff : ACPI Tables
1bfce000-1bffffff : ACPI Non-volatile Storage
c0000000-dfffffff : PCI Bus #01
  c0000000-dfffffff : 0000:01:00.0
e0000000-efffffff : pnp 00:0d
f0000000-f7ffffff : 0000:00:00.0
fcfff400-fcfff4ff : 0000:00:10.4
  fcfff400-fcfff4ff : ehci_hcd
fcfff800-fcfff8ff : 0000:00:0b.0
  fcfff800-fcfff8ff : 8139too
fcfffc00-fcfffcff : 0000:00:08.0
  fcfffc00-fcfffcff : 8139too
fd000000-feafffff : PCI Bus #01
  fd000000-fdffffff : 0000:01:00.0
  feaf0000-feafffff : 0000:01:00.0
feb00000-febfffff : PCI Bus #02
  febfc000-febfffff : 0000:02:01.0
fec00000-fec00fff : reserved
fed00000-fed003ff : HPET 0
fee00000-fee00fff : reserved
fff80000-ffffffff : reserved
###############################################################################
/proc/ioports:
0000-001f : dma1
0020-0021 : pic1
0040-0043 : timer0
0050-0053 : timer1
0060-006f : keyboard
0070-0077 : rtc
0080-008f : dma page reg
00a0-00a1 : pic2
00c0-00df : dma2
00f0-00ff : fpu
0170-0177 : 0000:00:0f.0
  0170-0177 : pata_via
01f0-01f7 : 0000:00:0f.0
  01f0-01f7 : pata_via
02f8-02ff : serial
0376-0376 : 0000:00:0f.0
  0376-0376 : pata_via
0378-037a : parport0
03c0-03df : vga+
03e0-03e7 : pnp 00:09
03f6-03f6 : 0000:00:0f.0
  03f6-03f6 : pata_via
03f8-03ff : serial
0400-041f : pnp 00:09
  0400-0407 : vt596_smbus
04d0-04d1 : pnp 00:09
0800-087f : pnp 00:09
  0800-0803 : ACPI PM1a_EVT_BLK
  0804-0805 : ACPI PM1a_CNT_BLK
  0808-080b : ACPI PM_TMR
  0810-0815 : ACPI CPU throttle
  0820-0823 : ACPI GPE0_BLK
0a00-0a0f : pnp 00:08
0a10-0a1f : pnp 00:08
0a20-0a2f : pnp 00:08
0a30-0a3f : pnp 00:08
0a40-0a4f : pnp 00:08
0a50-0a5f : pnp 00:08
0a60-0a61 : pnp 00:08
0cf8-0cff : PCI conf1
e400-e4ff : 0000:00:0b.0
  e400-e4ff : 8139too
e800-e8ff : 0000:00:08.0
  e800-e8ff : 8139too
ec00-ec1f : 0000:00:10.0
  ec00-ec1f : uhci_hcd
fc00-fc0f : 0000:00:0f.0
  fc00-fc0f : pata_via
###############################################################################
$ lsmod
Module                  Size  Used by
af_packet              21760  2 
video                  19600  0 
output                  3968  1 video
sbs                    13960  0 
sbshc                   6912  1 sbs
container               4864  0 
battery                13188  0 
ac                      6148  0 
quota_v1                3456  1 
ext3                  133768  1 
jbd                    42900  1 ext3
mbcache                 8448  1 ext3
lp                     11812  0 
loop                   18052  0 
parport_pc             35108  1 
parport                36168  2 lp,parport_pc
xt_limit                2816  6 
pcspkr                  3200  0 
button                  8336  0 
i2c_viapro              9236  0 
xt_multiport            3584  3 
i2c_core               24848  1 i2c_viapro
via_agp                10368  1 
shpchp                 33428  0 
pci_hotplug            30116  1 shpchp
agpgart                33840  1 via_agp
xt_state                2688  60 
xt_tcpudp               3456  61 
evdev                  12032  0 
nf_nat_tftp             2048  0 
nf_conntrack_tftp       5396  1 nf_nat_tftp
nf_nat_snmp_basic      10372  0 
nf_nat_sip              4992  0 
nf_conntrack_sip        9364  1 nf_nat_sip
nf_nat_pptp             3968  0 
nf_conntrack_pptp       7296  1 nf_nat_pptp
nf_conntrack_proto_gre     5760  1 nf_conntrack_pptp
nf_nat_proto_gre        3076  1 nf_nat_pptp
nf_nat_irc              3072  0 
nf_conntrack_irc        6936  1 nf_nat_irc
nf_nat_h323             7808  0 
nf_conntrack_h323      49576  1 nf_nat_h323
nf_nat_ftp              3584  0 
nf_conntrack_ftp        8992  1 nf_nat_ftp
nf_nat_amanda           2688  0 
ts_kmp                  2304  5 
nf_conntrack_amanda     5248  1 nf_nat_amanda
iptable_raw             3072  0 
iptable_nat             7560  1 
iptable_mangle          3456  0 
iptable_filter          3584  1 
ipt_ttl                 2048  0 
ipt_recent              9496  0 
ipt_ecn                 2432  0 
ipt_ah                  2176  0 
ipt_addrtype            3072  0 
ipt_ULOG                9220  0 
ipt_TTL                 2560  0 
ipt_REJECT              4352  0 
ipt_REDIRECT            2176  0 
ipt_NETMAP              2176  0 
ipt_MASQUERADE          3712  0 
nf_nat                 19472  12
nf_nat_tftp,nf_nat_sip,nf_nat_pptp,nf_nat_proto_gre,nf_nat_irc,nf_nat_h323,nf_nat_ftp,nf_nat_amanda,iptable_nat,ipt_REDIRECT,ipt_NETMAP,ipt_MASQUERADE
nf_conntrack_ipv4      17800  63 iptable_nat,nf_nat
ipt_LOG                 6400  8 
ipt_ECN                 3200  0 
ipt_CLUSTERIP           8580  0 
nf_conntrack           62884  22
xt_state,nf_nat_tftp,nf_conntrack_tftp,nf_nat_snmp_basic,nf_nat_sip,nf_conntrack_sip,nf_nat_pptp,nf_conntrack_pptp,nf_conntrack_proto_gre,nf_nat_irc,nf_conntrack_irc,nf_nat_h323,nf_conntrack_h323,nf_nat_ftp,nf_conntrack_ftp,nf_nat_amanda,nf_conntrack_amanda,iptable_nat,ipt_MASQUERADE,nf_nat,nf_conntrack_ipv4,ipt_CLUSTERIP
ip_tables              13328  4
iptable_raw,iptable_nat,iptable_mangle,iptable_filter
ip_queue               10000  0 
arptable_filter         2816  0 
arpt_mangle             2432  0 
arp_tables             11792  1 arptable_filter
x_tables               16516  22
xt_limit,xt_multiport,xt_state,xt_tcpudp,iptable_nat,ipt_ttl,ipt_recent,ipt_ecn,ipt_ah,ipt_addrtype,ipt_ULOG,ipt_TTL,ipt_REJECT,ipt_REDIRECT,ipt_NETMAP,ipt_MASQUERADE,ipt_LOG,ipt_ECN,ipt_CLUSTERIP,ip_tables,arpt_mangle,arp_tables
jfs                   187716  1 
sg                     37168  0 
sd_mod                 29968  5 
pata_via               12548  4 
pata_acpi               7424  0 
ata_generic             8324  0 
uhci_hcd               24848  0 
ehci_hcd               36492  0 
libata                161936  3 pata_via,pata_acpi,ata_generic
usbcore               145264  3 uhci_hcd,ehci_hcd
scsi_mod              151180  3 sg,sd_mod,libata
dock                   10380  1 libata
8139too                27136  0 
mii                     5760  1 8139too
thermal                18972  0 
processor              33332  1 thermal
fan                     5764  0 
fuse                   48412  1 
###############################################################################
$ lspci -vvv
00:00.0 Host bridge: VIA Technologies, Inc. CX700 Host Bridge (rev 03)
        Subsystem: VIA Technologies, Inc. CX700 Host Bridge
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 8
        Region 0: Memory at f0000000 (32-bit, prefetchable) [size=128M]
        Capabilities: [80] AGP version 3.5
                Status: RQ=8 Iso- ArqSz=0 Cal=2 SBA+ ITACoh- GART64- HTrans-
64bit- FW+ AGP3+ Rate=x4,x8
                Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP- GART64- 64bit- FW-
Rate=<none>
        Capabilities: [50] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:00.1 Host bridge: VIA Technologies, Inc. CX700 Host Bridge
        Subsystem: VIA Technologies, Inc. CX700 Host Bridge
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 0

00:00.2 Host bridge: VIA Technologies, Inc. CX700 Host Bridge
        Subsystem: VIA Technologies, Inc. CX700 Host Bridge
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 0

00:00.3 Host bridge: VIA Technologies, Inc. CX700 Host Bridge
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 0

00:00.4 Host bridge: VIA Technologies, Inc. CX700 Host Bridge
        Subsystem: VIA Technologies, Inc. CX700 Host Bridge
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 0

00:00.7 Host bridge: VIA Technologies, Inc. CX700 Host Bridge
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 0

00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI Bridge (prog-if 00
[Normal decode])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
        Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 0
        Bus: primary=00, secondary=01, subordinate=01, sec-latency=0
        I/O behind bridge: 0000f000-00000fff
        Memory behind bridge: fd000000-feafffff
        Prefetchable memory behind bridge: c0000000-dfffffff
        Secondary status: 66MHz+ FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ <SERR- <PERR+
        BridgeCtl: Parity+ SERR+ NoISA- VGA+ MAbort- >Reset- FastB2B-
        Capabilities: [70] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:08.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
        Subsystem: Realtek Semiconductor Co., Ltd. RT8139
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (8000ns min, 16000ns max)
        Interrupt: pin A routed to IRQ 10
        Region 0: I/O ports at e800 [size=256]
        Region 1: Memory at fcfffc00 (32-bit, non-prefetchable) [size=256]
        Capabilities: [50] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
PME(D0-,D1+,D2+,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0b.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL-8139/8139C/8139C+ (rev 10)
        Subsystem: Realtek Semiconductor Co., Ltd. RT8139
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (8000ns min, 16000ns max)
        Interrupt: pin A routed to IRQ 11
        Region 0: I/O ports at e400 [size=256]
        Region 1: Memory at fcfff800 (32-bit, non-prefetchable) [size=256]
        Capabilities: [50] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
PME(D0-,D1+,D2+,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:0f.0 IDE interface: VIA Technologies, Inc. CX700M2 IDE (prog-if 8a [Master
SecP PriP])
        Subsystem: VIA Technologies, Inc. Unknown device 0581
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 32
        Region 0: [virtual] Memory at 000001f0 (32-bit, non-prefetchable)
[size=8]
        Region 1: [virtual] Memory at 000003f0 (type 3, non-prefetchable)
[size=1]
        Region 2: [virtual] Memory at 00000170 (32-bit, non-prefetchable)
[size=8]
        Region 3: [virtual] Memory at 00000370 (type 3, non-prefetchable)
[size=1]
        Region 4: I/O ports at fc00 [size=16]
        Capabilities: [b0] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:10.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1
Controller (rev 90) (prog-if 00 [UHCI])
        Subsystem: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64, Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 10
        Region 4: I/O ports at ec00 [size=32]
        Capabilities: [80] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
PME(D0+,D1+,D2+,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 90) (prog-if 20
[EHCI])
        Subsystem: VIA Technologies, Inc. USB 2.0
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64, Cache Line Size: 32 bytes
        Interrupt: pin D routed to IRQ 11
        Region 0: Memory at fcfff400 (32-bit, non-prefetchable) [size=256]
        Capabilities: [80] Power Management version 2
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=375mA
PME(D0+,D1+,D2+,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [88] Debug port

00:11.0 ISA bridge: VIA Technologies, Inc. CX700 PCI to ISA Bridge
        Subsystem: VIA Technologies, Inc. CX700 PCI to ISA Bridge
        Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Capabilities: [c0] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-

00:11.7 Host bridge: VIA Technologies, Inc. CX700 Internal Module Bus
        Subsystem: VIA Technologies, Inc. CX700 Internal Module Bus
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort+ >SERR- <PERR-
        Latency: 128
        Capabilities: [58] HyperTransport: Interrupt Discovery and
Configuration

00:13.0 PCI bridge: VIA Technologies, Inc. CX700 Host Bridge (prog-if 00
[Normal decode])
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR+ FastB2B-
        Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort+ >SERR- <PERR-
        Latency: 0
        Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
        I/O behind bridge: 0000f000-00000fff
        Memory behind bridge: feb00000-febfffff
        Prefetchable memory behind bridge: 00000000fff00000-00000000000fffff
        Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- <SERR- <PERR-
        BridgeCtl: Parity+ SERR+ NoISA- VGA- MAbort- >Reset- FastB2B-

01:00.0 VGA compatible controller: VIA Technologies, Inc. CX700M2 UniChrome PRO
II Graphics (rev 03) (prog-if 00 [VGA controller])
        Subsystem: Unknown device 0908:1975
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz+ UDF- FastB2B- ParErr- DEVSEL=medium >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 64 (500ns min)
        Interrupt: pin A routed to IRQ 0
        Region 0: Memory at c0000000 (32-bit, prefetchable) [size=512M]
        Region 1: Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
        Expansion ROM at feaf0000 [disabled] [size=64K]
        Capabilities: [60] Power Management version 2
                Flags: PMEClk- DSI+ D1+ D2+ AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [70] AGP version 3.0
                Status: RQ=256 Iso- ArqSz=0 Cal=7 SBA+ ITACoh- GART64- HTrans-
64bit- FW- AGP3+ Rate=x4,x8
                Command: RQ=1 ArqSz=0 Cal=0 SBA- AGP- GART64- 64bit- FW-
Rate=<none>

02:01.0 Audio device: VIA Technologies, Inc. VIA High Definition Audio
Controller (rev 10)
        Subsystem: VIA Technologies, Inc. VIA High Definition Audio Controller
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR-
        Latency: 0, Cache Line Size: 32 bytes
        Interrupt: pin A routed to IRQ 5
        Region 0: Memory at febfc000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 2
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=55mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0
Enable-
                Address: 0000000000000000  Data: 0000
        Capabilities: [70] Express Unknown type IRQ 0
                Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag-
                Device: Latency L0s <64ns, L1 <1us
                Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
                Device: RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
                Device: MaxPayload 128 bytes, MaxReadReq 128 bytes
                Link: Supported Speed unknown, Width x0, ASPM unknown, Port 0
                Link: Latency L0s <64ns, L1 <1us
                Link: ASPM Disabled CommClk- ExtSynch-
                Link: Speed unknown, Width x0
###############################################################################
/proc/modules:
af_packet 21760 2 - Live 0xdcd1c000
video 19600 0 - Live 0xdcd16000
output 3968 1 video, Live 0xdcc06000
sbs 13960 0 - Live 0xdcd3a000
sbshc 6912 1 sbs, Live 0xdcc31000
container 4864 0 - Live 0xdcc17000
battery 13188 0 - Live 0xdcc2c000
ac 6148 0 - Live 0xdcc14000
quota_v1 3456 1 - Live 0xdcc04000
ext3 133768 1 - Live 0xdcef6000
jbd 42900 1 ext3, Live 0xdcc40000
mbcache 8448 1 ext3, Live 0xdcc00000
lp 11812 0 - Live 0xdcbfc000
loop 18052 0 - Live 0xdcbf6000
parport_pc 35108 1 - Live 0xdcc22000
parport 36168 2 lp,parport_pc, Live 0xdcc0a000
xt_limit 2816 6 - Live 0xdcc08000
pcspkr 3200 0 - Live 0xdcbe1000
button 8336 0 - Live 0xdcbf2000
i2c_viapro 9236 0 - Live 0xdcbdd000
xt_multiport 3584 3 - Live 0xdc9f7000
i2c_core 24848 1 i2c_viapro, Live 0xdcc1a000
via_agp 10368 1 - Live 0xdc9ef000
shpchp 33428 0 - Live 0xdcbe3000
pci_hotplug 30116 1 shpchp, Live 0xdcc56000
agpgart 33840 1 via_agp, Live 0xdcc4c000
xt_state 2688 60 - Live 0xdc9f3000
xt_tcpudp 3456 61 - Live 0xdc9f5000
evdev 12032 0 - Live 0xdc9eb000
nf_nat_tftp 2048 0 - Live 0xdc9e9000
nf_conntrack_tftp 5396 1 nf_nat_tftp, Live 0xdc9e6000
nf_nat_snmp_basic 10372 0 - Live 0xdc9e2000
nf_nat_sip 4992 0 - Live 0xdc9df000
nf_conntrack_sip 9364 1 nf_nat_sip, Live 0xdc9db000
nf_nat_pptp 3968 0 - Live 0xdc9c7000
nf_conntrack_pptp 7296 1 nf_nat_pptp, Live 0xdc9c4000
nf_conntrack_proto_gre 5760 1 nf_conntrack_pptp, Live 0xdc9c1000
nf_nat_proto_gre 3076 1 nf_nat_pptp, Live 0xdc9bf000
nf_nat_irc 3072 0 - Live 0xdc9ba000
nf_conntrack_irc 6936 1 nf_nat_irc, Live 0xdc9b7000
nf_nat_h323 7808 0 - Live 0xdc9b4000
nf_conntrack_h323 49576 1 nf_nat_h323, Live 0xdc9cd000
nf_nat_ftp 3584 0 - Live 0xdc9b2000
nf_conntrack_ftp 8992 1 nf_nat_ftp, Live 0xdc9ae000
nf_nat_amanda 2688 0 - Live 0xdc9ac000
ts_kmp 2304 5 - Live 0xdc9bd000
nf_conntrack_amanda 5248 1 nf_nat_amanda, Live 0xdc9a9000
iptable_raw 3072 0 - Live 0xdc9a7000
iptable_nat 7560 1 - Live 0xdc9a4000
iptable_mangle 3456 0 - Live 0xdc9cb000
iptable_filter 3584 1 - Live 0xdc9c9000
ipt_ttl 2048 0 - Live 0xdc99e000
ipt_recent 9496 0 - Live 0xdc99a000
ipt_ecn 2432 0 - Live 0xdc998000
ipt_ah 2176 0 - Live 0xdc996000
ipt_addrtype 3072 0 - Live 0xdc994000
ipt_ULOG 9220 0 - Live 0xdc990000
ipt_TTL 2560 0 - Live 0xdc98e000
ipt_REJECT 4352 0 - Live 0xdc98b000
ipt_REDIRECT 2176 0 - Live 0xdc989000
ipt_NETMAP 2176 0 - Live 0xdc987000
ipt_MASQUERADE 3712 0 - Live 0xdc985000
nf_nat 19472 12
nf_nat_tftp,nf_nat_sip,nf_nat_pptp,nf_nat_proto_gre,nf_nat_irc,nf_nat_h323,nf_nat_ftp,nf_nat_amanda,iptable_nat,ipt_REDIRECT,ipt_NETMAP,ipt_MASQUERADE,
Live 0xdc97f000
nf_conntrack_ipv4 17800 63 iptable_nat,nf_nat, Live 0xdc979000
ipt_LOG 6400 8 - Live 0xdc9a1000
ipt_ECN 3200 0 - Live 0xdc8b0000
ipt_CLUSTERIP 8580 0 - Live 0xdc8e6000
nf_conntrack 62884 22
xt_state,nf_nat_tftp,nf_conntrack_tftp,nf_nat_snmp_basic,nf_nat_sip,nf_conntrack_sip,nf_nat_pptp,nf_conntrack_pptp,nf_conntrack_proto_gre,nf_nat_irc,nf_conntrack_irc,nf_nat_h323,nf_conntrack_h323,nf_nat_ftp,nf_conntrack_ftp,nf_nat_amanda,nf_conntrack_amanda,iptable_nat,ipt_MASQUERADE,nf_nat,nf_conntrack_ipv4,ipt_CLUSTERIP,
Live 0xdc968000
ip_tables 13328 4 iptable_raw,iptable_nat,iptable_mangle,iptable_filter, Live
0xdc8e1000
ip_queue 10000 0 - Live 0xdc8dd000
arptable_filter 2816 0 - Live 0xdc8aa000
arpt_mangle 2432 0 - Live 0xdc89d000
arp_tables 11792 1 arptable_filter, Live 0xdc8d9000
x_tables 16516 22
xt_limit,xt_multiport,xt_state,xt_tcpudp,iptable_nat,ipt_ttl,ipt_recent,ipt_ecn,ipt_ah,ipt_addrtype,ipt_ULOG,ipt_TTL,ipt_REJECT,ipt_REDIRECT,ipt_NETMAP,ipt_MASQUERADE,ipt_LOG,ipt_ECN,ipt_CLUSTERIP,ip_tables,arpt_mangle,arp_tables,
Live 0xdc8d3000
jfs 187716 1 - Live 0xdc8ef000
sg 37168 0 - Live 0xdc8c8000
sd_mod 29968 5 - Live 0xdc8bf000
pata_via 12548 4 - Live 0xdc8ea000
pata_acpi 7424 0 - Live 0xdc839000
ata_generic 8324 0 - Live 0xdc8ac000
uhci_hcd 24848 0 - Live 0xdc8a2000
ehci_hcd 36492 0 - Live 0xdc865000
libata 161936 3 pata_via,pata_acpi,ata_generic, Live 0xdc9fa000
usbcore 145264 3 uhci_hcd,ehci_hcd, Live 0xdc878000
scsi_mod 151180 3 sg,sd_mod,libata, Live 0xdc83f000
dock 10380 1 libata, Live 0xdc835000
8139too 27136 0 - Live 0xdc870000
mii 5760 1 8139too, Live 0xdc832000
thermal 18972 0 - Live 0xdc82c000
processor 33332 1 thermal, Live 0xdc822000
fan 5764 0 - Live 0xdc83c000
fuse 48412 1 - Live 0xdc8b2000
###############################################################################
$ ver_linux:

If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.

Linux buddhist 2.6.25.3 #2 Sun May 11 15:35:44 EDT 2008 i686 GNU/Linux

Gnu C                  4.2.3
Gnu make               3.81
binutils               2.18.0.20080103
util-linux             2.13.1
mount                  2.13.1
module-init-tools      3.3-pre11
e2fsprogs              1.40.8
jfsutils               1.1.11
reiserfsprogs          3.6.19
pcmciautils            014
quota-tools            3.15.
PPP                    2.4.4
Linux C Library        2.7
Dynamic linker (ldd)   2.7
Procps                 3.2.7
Net-tools              1.60
Console-tools          0.2.3
Sh-utils               6.10
udev                   117
wireless-tools         29
Modules Loaded         af_packet video output sbs sbshc container battery ac
quota_v1 ext3 jbd mbcache lp loop parport_pc parport xt_limit pcspkr button
i2c_viapro xt_multiport i2c_core via_agp shpchp pci_hotplug agpgart xt_state
xt_tcpudp evdev nf_nat_tftp nf_conntrack_tftp nf_nat_snmp_basic nf_nat_sip
nf_conntrack_sip nf_nat_pptp nf_conntrack_pptp nf_conntrack_proto_gre
nf_nat_proto_gre nf_nat_irc nf_conntrack_irc nf_nat_h323 nf_conntrack_h323
nf_nat_ftp nf_conntrack_ftp nf_nat_amanda ts_kmp nf_conntrack_amanda
iptable_raw iptable_nat iptable_mangle iptable_filter ipt_ttl ipt_recent
ipt_ecn ipt_ah ipt_addrtype ipt_ULOG ipt_TTL ipt_REJECT ipt_REDIRECT ipt_NETMAP
ipt_MASQUERADE nf_nat nf_conntrack_ipv4 ipt_LOG ipt_ECN ipt_CLUSTERIP
nf_conntrack ip_tables ip_queue arptable_filter arpt_mangle arp_tables x_tables
jfs sg sd_mod pata_via pata_acpi ata_generic uhci_hcd ehci_hcd libata usbcore
scsi_mod dock 8139too mii thermal processor fan fuse
###############################################################################
/proc/version:
Linux version 2.6.25.3 (root at hughes) (gcc version 4.2.3 (Ubuntu
4.2.3-2ubuntu7)) #2 Sun May 11 15:35:44 EDT 2008


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