On Sat, 8 Sep 2007 09:29:18 -0700 (PDT) bugme-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=8995 > > Summary: /proc/acpi/alarm worked; update to 2.6.22.2 and > /sys/class/rtc/rtc0/wakealarm don't > Product: ACPI > Version: 2.5 > KernelVersion: 2.6.22.2 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Power-Sleep-Wake > AssignedTo: acpi_power-sleep-wake@xxxxxxxxxxxxxxxxxxxx > ReportedBy: huffcslists@xxxxxxxxx > > > Most recent kernel where this bug did not occur:2.6.20 > Distribution: FC6 > Hardware Environment: ASUS A8N-SLI mobo, Athlon 64 3200+, PATA Disk > Software Environment: FC6, MythTV 0.20.2-164 > Problem Description: > Change in kernel code from support for /proc/acpi/alarm to > /sys/class/rtc/rtc0/wakealarm and supporting code borked working system. Will > no longer wake at set time. > Time set <> time reported by cat /sys.../wakealarm. Return value off by large > constant. Note: Mobo doesn't support month, day, or year in alarm setting. > > Steps to reproduce: > Before upgrade from 2.6.20 to 2.6.22.2, suspend-to-disk with powerdown to > standby would wake at time echoed into /proc/acpi/alarm. Change of wakeup time > setting code to echo 0 to /sys/class/rtc/rtc0/wakealarm followed by echo of > seconds since epoch of desired wakeup time under 2.6.22.2 does not work. > System will not wake up at specified time. Will wake by keyboard keystroke, > such as Ctrl+Esc. Tried enabling APM (BIOS) alarm setting and all entries > under /proc/acpi/wakeup (all on at once), but no improvement. > Test sequence: > # echo 0 > /sys/class/rtc/rtc0/wakealarm > # t=`date +%s`; w=`expr $t + 60`; echo $w > /sys/class/rtc/rtc0/wakealarm > # echo $w > 1189268800 > # cat /sys/class/rtc/rtc0/wakealarm > 2076101696 > # expr 2076101696 - 1189268800 > 886832896 > <invoke your favorite code to suspend to disk and power down system leaving > standby power on> > <wait> > <wait some more> > <hit power on button> > Guys, can we please work out where the problem lies here? Is it in the new RTC code, ACPI or what? Thanks. _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
