[Bugme-new] [Bug 8954] New: Pinnacle PCTV USB2 does not work anymore

[bugme-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=8954

           Summary: Pinnacle PCTV USB2 does not work anymore
           Product: Drivers
           Version: 2.5
     KernelVersion: 2.6.22.1 (vanilla)
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: drivers_other at kernel-bugs.osdl.org
        ReportedBy: rschaeuble at gmx.ch


Most recent kernel where this bug did not occur: 2.6.21 (vanilla)
Distribution: Gentoo
Hardware Environment: IBM Thinkpad R50
Software Environment: Gentoo Linux x86

Linux euler 2.6.22-gentoo-r5 #1 Sat Aug 25 10:22:56 CEST 2007 i686 Intel(R)
Pentium(R) M processor 1500MHz GenuineIntel GNU/Linux

Gnu C                  4.1.2
Gnu make               3.81
binutils               2.17
util-linux             2.12r
mount                  2.12r
module-init-tools      3.2.2
e2fsprogs              1.39
Linux C Library        > libc.2.5
Dynamic linker (ldd)   2.5
Procps                 3.2.7
Net-tools              1.60
Kbd                    1.12
Sh-utils               6.9
udev                   114
wireless-tools         29
Modules Loaded         ipv6 snd_pcm_oss snd_mixer_oss snd_seq_dummy snd_seq_oss
snd_seq_midi_event snd_seq lirc_sir lirc_dev lp snd_usb_audio snd_usb_lib
snd_rawmidi snd_seq_device snd_hwdep irtty_sir sir_dev irda crc_ccitt radeonfb
fb_ddc i2c_algo_bit i2c_core ipw2100 ieee80211 ieee80211_crypt firmware_class
snd_intel8x0 snd_intel8x0m snd_ac97_codec ac97_bus snd_pcm snd_timer snd
snd_page_alloc yenta_socket rsrc_nonstatic pcmcia_core parport_pc parport
intel_agp agpgart rtc pcspkr e1000 scsi_wait_scan ohci1394 ieee1394 sl811_hcd
usbhid ohci_hcd uhci_hcd usb_storage ehci_hcd usbcore

Problem Description: 
If I plug in the PCTV USB2 device, the image of the first channel is visible,
but no sound. If I try to switch the channel, the image gets scrambled. In
kernel 2.6.21, the same configuration worked perfectly well. The bug arises the
first time in kernel 2.6.22.1 whereas kernel 2.6.21 works perfectly for me. So
I n Summary, I have the following situation:

linux-2.6.21 (vanilla):   works
linux-2.6.21-gentoo-r4:   works
linux-2.6.22.1 (vanilla): bug
linux-2.6.22-gentoo-r2:   bug
linux-2.6.22-gentoo-r4:   bug
linux-2.6.22-gentoo-r5:   bug

The PCTV USB2 device uses the em28xx module, but the problem may also be the
tuner.

I initialize the modules as follows:
alias char-major-81 videodev
alias char-major-81-0 tveeprom
alias char-major-81-1 em28xx
options em28xx card=3 tuner=56
options tuner qss=0 port2=0 pal=b secam=b

Steps to reproduce:
I use the following script to watch tv:
#!/bin/sh -x
gnome-screensaver-command --exit
sox -t ossdsp -r 48000 -q -b -c 2 /dev/dsp2 -t ossdsp /dev/dsp &
pid_sox=$!
mplayer tv://
kill $pid_sox


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