[Bug 30683] New: crash on suspend/resume, kms stops booting, MobilityRadeon HD 3400 Series

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=30683

           Summary: crash on suspend/resume, kms stops booting,
                    MobilityRadeon HD 3400 Series
           Product: xorg
           Version: 6.9.0
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: maximilian.mehnert at googlemail.com
         QAContact: xorg-team at lists.x.org


Linux-Kernel 2.6.35.7
Debian with xorg-xserver-video-radeon 6.13.1-2
Suspending to ram:

With an i686-Kernel, I can suspend/resume fine with radeon.modeset=0.
With radeon.modeset=1 the kernel stops booting.

With an x86_64-Kernel and radeon.modeset=0 the first suspend/resume cycle
works, the second suspend ends with a crash/blinking monitor (while
suspending).
radeon.modeset=1 does not work as above.

I could not see anything suggesting an error in syslog / Xorg.log except
"kernel: s2ram: vm86 mode not supported on 64 bit kernel"

Video card:
01:00.0 VGA compatible controller: ATI Technologies Inc Mobility Radeon HD 3400
Series (prog-if 00 [VGA controller])
        Subsystem: Dell Device 029f

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