[Bug 23103] New: screen not lighting up on resume when using kms

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=23103

           Summary: screen not lighting up on resume when using kms
           Product: xorg
           Version: 7.4
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: eruditehermit at yahoo.com
         QAContact: xorg-team at lists.x.org


When I try to suspend and resume with kernel mode setting, I am able to suspend
but on resume, the screen is completely black and the laptop screen does not
turn back on. The screen doesn't emit any light as it does when the screen
shows a black colour. I am able to perform a VT switch with Ctrl+Alt+F1 and
reboot the machine with ctrl+alt+del.

My Setup:
Laptop Dell Inspiron 8600
Radeon Mobility 9600 M10/M11 RV350 4E50
Kernel 2.6.31-5
radeon driver git 2009/07/29
the debug and messages files are with drm.debug=15


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