[Bug 55941] New: Hybrid graphics i915/radeon. Switch to radeon results to black screen

[Bug 55941] New: Hybrid graphics i915/radeon. Switch to radeon results to black screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=55941

           Summary: Hybrid graphics i915/radeon. Switch to radeon results
                    to black screen
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.8.4
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: damigos@freemail.gr
        Regression: No


Created an attachment (id=96611)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=96611)
lspci

I have installed Arch Linux on a Dell Inspiron R15 with hybrid Intel/AMD
graphics. vga_switcheroo is enabled and I can control radeon power with "echo
ON/OFF > /sys/kernel/debug/vgaswitcheroo/switch".
But when I try to switch to radeon in console with "echo DIS >
/sys/kernel/debug/vgaswitcheroo/switch" the screen turns off.
I can switch back to intel with "echo IGD >
/sys/kernel/debug/vgaswitcheroo/switch" by blind typing it, and then the screen
turns back on.

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[Bug 55941] Hybrid graphics i915/radeon. Switch to radeon results to black screen

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https://bugzilla.kernel.org/show_bug.cgi?id=55941





--- Comment #1 from Dimitris Damigos <damigos@freemail.gr>  2013-03-29 18:53:19 ---
Created an attachment (id=96621)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=96621)
dmesg

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[Bug 55941] Hybrid graphics i915/radeon. Switch to radeon results to black screen

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https://bugzilla.kernel.org/show_bug.cgi?id=55941





--- Comment #2 from Dimitris Damigos <damigos@freemail.gr>  2013-03-29 18:54:12 ---
I also tried 3.0.70 lts and instead of the screen turning off, it just freezes.

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[Bug 55941] Hybrid graphics i915/radeon. Switch to radeon results to black screen

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=55941


Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com




--- Comment #3 from Alex Deucher <alexdeucher@gmail.com>  2013-03-29 20:59:13 ---
You have a muxless powerxpress system so there are no displays physically
connected to the radeon card.  The only way to utilize the radeon card is for
offscreen rendering (radeon renders application frame and the frame is copied
to the intel card for display).  You need the new gpu hotplug features in
xserver 1.13.x or 1.14 to utilize the card in that manner.

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[Bug 55941] Hybrid graphics i915/radeon. Switch to radeon results to black screen

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https://bugzilla.kernel.org/show_bug.cgi?id=55941


laurent.debian@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |laurent.debian@gmail.com




--- Comment #4 from laurent.debian@gmail.com  2013-04-06 01:55:28 ---
I have  been very puzzled when reading your last message Alex, since I got (on
debian) the exact same problem with a Mux system intel Ironlake/radeon Hd5650.
The same issue occurs with kernel 3.7.6 (compiled by me) while the switch works
correctly one the "distrib" kernel 3.2.0-4-ppae. Another issue 
appears with kernel 3.8.5 (with the NEW default modesetting bla for radeon..)
but in that case  X seems to crash (well i don't really now what's happening
only got the little  "-" on the top left of my screen)
I would be glad to give any addiotionnal infos relevant or to file a bug
myself.


(In reply to comment #3)
> You have a muxless powerxpress system so there are no displays physically
> connected to the radeon card.  The only way to utilize the radeon card is for
> offscreen rendering (radeon renders application frame and the frame is copied
> to the intel card for display).  You need the new gpu hotplug features in
> xserver 1.13.x or 1.14 to utilize the card in that manner.

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[Bug 55941] Hybrid graphics i915/radeon. Switch to radeon results to black screen

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https://bugzilla.kernel.org/show_bug.cgi?id=55941





--- Comment #5 from laurent.debian@gmail.com  2013-04-06 02:03:48 ---
By the way this it should be the duplicated of Bug 55311.

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[Bug 55941] Hybrid graphics i915/radeon. Switch to radeon results to black screen

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https://bugzilla.kernel.org/show_bug.cgi?id=55941





--- Comment #6 from Alex Deucher <alexdeucher@gmail.com>  2013-04-07 16:30:00 ---
(In reply to comment #4)
> I have  been very puzzled when reading your last message Alex, since I got (on
> debian) the exact same problem with a Mux system intel Ironlake/radeon Hd5650.

On mux-less systems you can't switch the displays since there are no displays
connected to the dGPU.

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[Bug 55941] Hybrid graphics i915/radeon. Switch to radeon results to black screen

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https://bugzilla.kernel.org/show_bug.cgi?id=55941

Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |alan@lxorguk.ukuu.org.uk
         Resolution|---                         |DOCUMENTED

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[Bug 55941] Hybrid graphics i915/radeon. Switch to radeon results to black screen

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https://bugzilla.kernel.org/show_bug.cgi?id=55941

Alan <alan@lxorguk.ukuu.org.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

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