[Bug 41340] New: vga_switcheroo doesn't work with AMD Radeon HD 6770M

[Bug 41340] New: vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

           Summary: vga_switcheroo doesn't work with AMD Radeon HD 6770M
           Product: DRI
           Version: unspecified
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: high
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: mlambda@gmail.com


Created an attachment (id=51758)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=51758)
Kernel config

How to reproduce:
cd /sys/kernel/debug/vgaswitcheroo/; echo ON >switch; echo DDIS >switch
Hit Ctrl+Alt+Backspace to restart X-Server

Expected Result:
Switch to discrete GPU

Actual Result:
System freezes, but can be restarted with Ctrl+Alt+Esc

Notebook: HP Pavilion dv7 6104eg
Kernel: latest git kernel (commit d5767c53535ac79758084773418e0ad186aba4a2),
Linux hp 3.1.0-rc8-custom #1 SMP Wed Sep 28 21:23:06 CEST 2011 x86_64 x86_64
x86_64 GNU/Linux
Distribution: Ubuntu 11.04 64bit

lsmod:
Module                  Size  Used by
vboxnetadp             13340  0 
vboxnetflt             28297  0 
vboxdrv               252684  2 vboxnetadp,vboxnetflt
radeon               1016473  0 
iwlagn                311183  0 
ttm                    72079  1 radeon
r8169                  55918  0

If you need any additional information, please tell me!

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

--- Comment #1 from mlambda@gmail.com 2011-09-29 09:13:33 PDT ---
Created an attachment (id=51759)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=51759)
output of 'dmesg' before switch

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

--- Comment #2 from mlambda@gmail.com 2011-09-29 09:14:10 PDT ---
Created an attachment (id=51760)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=51760)
Output of 'lspci -vvnn'

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

--- Comment #3 from mlambda@gmail.com 2011-09-29 09:15:02 PDT ---
Created an attachment (id=51761)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=51761)
/var/log/syslog

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

--- Comment #4 from mlambda@gmail.com 2011-09-29 09:15:44 PDT ---
Created an attachment (id=51762)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=51762)
/var/log/Xorg.0.log

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

--- Comment #5 from mlambda@gmail.com 2011-09-29 09:16:18 PDT ---
Created an attachment (id=51763)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=51763)
/var/log/Xorg.1.log

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

mlambda@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #51758|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

mlambda@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #51759|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

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https://bugs.freedesktop.org/show_bug.cgi?id=41340

mlambda@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #51760|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

mlambda@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #51761|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

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https://bugs.freedesktop.org/show_bug.cgi?id=41340

mlambda@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #51762|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

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https://bugs.freedesktop.org/show_bug.cgi?id=41340

mlambda@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #51763|application/octet-stream    |text/plain
          mime type|                            |

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

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https://bugs.freedesktop.org/show_bug.cgi?id=41340

--- Comment #6 from mlambda@gmail.com 2011-09-29 11:09:03 PDT ---
Created an attachment (id=51776)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=51776)
/proc/cpuinfo

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

--- Comment #7 from Alex Deucher <agd5f@yahoo.com> 2011-09-29 11:52:30 PDT ---
You have a mux-less system which means the radeon card is not actually
connected to any physical displays as such there is no way for you to switch to
the radeon card with vgaswitcheroo.  In order to support mux-less systems the
xserver needs support for decoupling display and rendering and the drm needs
support for sharing buffers between drivers.  This is a large amount of work
and probably won't happen in the short term.

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

--- Comment #8 from mlambda@gmail.com 2011-09-29 13:05:42 PDT ---
(In reply to comment #7)
> You have a mux-less system which means the radeon card is not actually
> connected to any physical displays as such there is no way for you to switch to
> the radeon card with vgaswitcheroo.  In order to support mux-less systems the
> xserver needs support for decoupling display and rendering and the drm needs
> support for sharing buffers between drivers.  This is a large amount of work
> and probably won't happen in the short term.

I have a BIOS Option "Switchable Graphics Mode":

Fixed Mode - Graphics adapter switch is based on AC/DC transition or user
selectable options under OS
Dynamic Mode - Seamlessy switch to internal or external graphics adapter based
on application needs

If I select "Fixed Mode" the BIOS still enables the Intel graphics even on AC
power and vga_switcheroo doesn't work. Does this setting make any difference in
principle?

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

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https://bugs.freedesktop.org/show_bug.cgi?id=41340

--- Comment #9 from mlambda@gmail.com 2011-09-29 13:41:47 PDT ---
According to
http://linux-hybrid-graphics.blogspot.com/2011/08/bios-update-has-been-released-for-amd.html
vgaswitcheroo should work when using the "Fixed Mode" BIOS setting, but I still
get the same error.

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[Bug 41340] vga_switcheroo doesn't work with AMD Radeon HD 6770M

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=41340

Alex Deucher <agd5f@yahoo.com> changed:

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

--- Comment #10 from Alex Deucher <agd5f@yahoo.com> 2011-10-05 06:32:57 PDT ---


*** This bug has been marked as a duplicate of bug 37528 ***

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