[Bugme-new] [Bug 11411] New: Regression 2.6.26-rc5 .. 2.6.26-rc6: RTC wakeup doesn't work anymore

[bugme-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=11411

           Summary: Regression 2.6.26-rc5 .. 2.6.26-rc6: RTC wakeup doesn't
                    work anymore
           Product: ACPI
           Version: 2.5
     KernelVersion: 2.6.26-rc6
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Power-Off
        AssignedTo: acpi_power-off at kernel-bugs.osdl.org
        ReportedBy: stefan.bauer at cs.tu-chemnitz.de
                CC: len.brown at intel.com, rui.zhang at intel.com,
                    yakui.zhao at intel.com


Latest working kernel version:
2.6.26-rc5

Earliest failing kernel version:
2.6.26-rc6

Distribution:
Debian Etch with some packages from Lenny

Hardware Environment:
Gigabyte GA-6OXM7 (RTC can wake from S4, alarms up to one month)
00:00.0 Host bridge: Intel Corporation 82815 815 Chipset Host Bridge and Memory
Controller Hub (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82815 CGC [Chipset
Graphics Controller] (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801AA PCI Bridge (rev 02)
00:1f.0 ISA bridge: Intel Corporation 82801AA ISA Bridge (LPC) (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801AA IDE (rev 02)
01:04.0 Network controller: RaLink RT2561/RT61 802.11g PCI
01:05.0 Ethernet controller: Intel Corporation 82545GM Gigabit Ethernet
Controller (rev 04)
01:08.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01)
01:0a.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01)

Software Environment:
Video Disk Recorder (VDR)

Problem Description:
After setting the wakeup time via /sys/class/rtc/rtc0/wakealarm, the system
does'nt wake up anymore.
RTC runs in UTC, RTC wakeup is enabled in BIOS.
Git bisect figured out that e1094bfa26e5e94af2fea79e004614dbce42b008 (ACPI:
Disable Fixed_RTC event when installing RTC handler) caused this regression.
(See bug 10010)

Steps to reproduce:
echo 0 > /sys/class/rtc/rtc0/wakealarm
date +%s -d "+4 minutes" > /sys/class/rtc/rtc0/wakealarm
halt


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