[Bug 77562] New: Display keep blank after resume

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=77562

          Priority: medium
            Bug ID: 77562
          Assignee: dri-devel at lists.freedesktop.org
           Summary: Display keep blank after resume
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: rdp.effort at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: XOrg CVS
         Component: DRM/Radeon
           Product: DRI

Created attachment 97496
  --> https://bugs.freedesktop.org/attachment.cgi?id=97496&action=edit
dmesg with dri.debug=4

I have a behaviour very similar to
https://bugs.freedesktop.org/show_bug.cgi?id=42960.

After resuming from suspend, display is blank.

I have tried the tricks suggested in #42960 (acpi_sleep=s3_bios) with no luck,
when I use that the laptop doesn't resume correctly.

With the catalyst driver the display resumes correctly. 

It's an Ubuntu 13.10 with a 3.14 kernel, DPM is activated.

Feel free to ask for tests.

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