[Bugme-janitors] [Bug 10620] New: X does not resume (intel chipset)

bugme-daemon at bugzilla.kernel.org bugme-daemon at bugzilla.kernel.org
Thu May 8 06:53:03 PDT 2008


http://bugzilla.kernel.org/show_bug.cgi?id=10620

           Summary: X does not resume (intel chipset)
           Product: Power Management
           Version: 2.5
     KernelVersion: 2.6.26-rc1-110-ga153063
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Hibernation/Suspend
        AssignedTo: power-management_other at kernel-bugs.osdl.org
        ReportedBy: romano.giannetti at gmail.com


Latest working kernel version:2.6.25.1
Earliest failing kernel version:2.6.26-rc1
Distribution:Ubuntu 8.04 Hardy
Hardware Environment:see attached lshw.txt
Software Environment:xserver-xorg-video-intel  2:2.2.1-1ubuntu12
Problem Description:

Suspend to ram, using the distribution scripts or just echo mem >
/sys/power/state. 

On resume, the screen stays blank (most of the time), with just the cursor
shown (sometime you can move it, sometime no). The system is nevertheless
working. Sometime you can recover by hitting ctr-alt-backspace and reenter X,
sometime not.

I can't test on console because after X starts, console is busted for me
(that's not a regression, it has been like that since at least 2.6.23, and it
was decided it was a x driver problem, but it's still not fixed for me...
see https://bugs.launchpad.net/bugs/182865 ) 

I attach .config, lshw output, and two syslogs. syslog_2.6.25.txt shows a
successfull suspend/resume cycle in 2.6.25.1. 

syslog_new.txt shows a boot of the new kernel, then a suspend/resume with ended
with a blank video, resumed with a ctrl-alt-backspace, and finally a new
suspend/resume ended with a blank screen that could not be resumed by a
ctrl-alt-backspace, so sysrq-b was needed.

Strange things I see: 

There is a WARN_ON at line 1485 of the log (sysdev_driver_register()) but seems
unrelated.

A lot of "ACPI handle has no context!" during suspend/resume

A very scary "trying to get vblank count for disabled pipe 0" that smells as a
possible guilty failure...


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