[Bug 80851] New: Radeon[Trinity HD 7520G] Resume Results in Blank Screen, no backlight

[Bug 80851] New: Radeon[Trinity HD 7520G] Resume Results in Blank Screen, no backlight

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=80851

            Bug ID: 80851
           Summary: Radeon[Trinity HD 7520G] Resume Results in Blank
                    Screen, no backlight
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.15.6
          Hardware: x86-64
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: swoorupj@gmail.com
        Regression: No

Created attachment 143781
  --> https://bugzilla.kernel.org/attachment.cgi?id=143781&action=edit
dmesg log

Hi,

When using the radeon DRM module in kernel, putting the system back to sleep
and resuming always results in blank screen. It only works if the radeon kernel
module is disabled.

My System Specs:
Asus K55N laptop
Processory: AMD A6-4400M APU
Graphics: Radeon HD 7520G

With windows 7/8, resuming just simply works fine though

Regards,
Swoorup

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[Bug 80851] Radeon[Trinity HD 7520G] Resume Results in Blank Screen, no backlight

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=80851

--- Comment #1 from swoorupj@gmail.com ---
Update, 

I tried doing a git-bisect today. I only tried out kernel 3.18 rc3 which was
bad and had the same issue, and then I directly checkout kernel back to 3.8 in
which the issue was still occuring. 

So this means that there was no solution for this bug at all with the exception
of catalyst driver?

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[Bug 80851] Radeon[Trinity HD 7520G] Resume Results in Blank Screen, no backlight

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=80851

swoorupj@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Kernel Version|3.15.6                      |3.18-rc3
         Regression|No                          |Yes
           Severity|normal                      |high

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[Bug 80851] Radeon[Trinity HD 7520G] Resume Results in Blank Screen, no backlight

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=80851

swoorupj@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Regression|Yes                         |No

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[Bug 80851] Radeon[Trinity HD 7520G] Resume Results in Blank Screen, no backlight

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=80851

swoorupj@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

--- Comment #2 from swoorupj@gmail.com ---


*** This bug has been marked as a duplicate of bug 88031 ***

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