[Bug 62246] LVDS screen mode switching fails

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=62246

Martin Peres  changed:

   What|Removed |Added

 Resolution|--- |MOVED
 Status|NEW |RESOLVED

--- Comment #4 from Martin Peres  ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
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You can subscribe and participate further through the new bug through this link
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[Bug 62246] LVDS screen mode switching fails

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=62246

--- Comment #3 from Felix von Leitner  ---
The patch is on both kernels I tried, 3.9.0-rc1 and the git kernel.

I agree it sounds like vgaswitcheroo does not actually switch.
Are there any knobs for vgaswitcheroo that I could try?

For switching, I write "ON\nDIS\nOFF" to
/sys/kernel/debug/vgaswitcheroo/switch,
using three separate writes.

That used to work fine.

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[Bug 62246] LVDS screen mode switching fails

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=62246

--- Comment #2 from Alex Deucher  ---
Sounds like vgaswitcheroo is not switching the displays from the intel to the
radeon chip.

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[Bug 62246] LVDS screen mode switching fails

[bugzilla-dae...@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=62246

--- Comment #1 from Alex Deucher  ---
Please make sure your kernel has this patch:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=43a23aa450cc19fe8996caf09e7e21ae5f6e56e8

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[Bug 62246] LVDS screen mode switching fails

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=62246

--- Comment #1 from Alex Deucher ag...@yahoo.com ---
Please make sure your kernel has this patch:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=43a23aa450cc19fe8996caf09e7e21ae5f6e56e8

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[Bug 62246] LVDS screen mode switching fails

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=62246

--- Comment #2 from Alex Deucher ag...@yahoo.com ---
Sounds like vgaswitcheroo is not switching the displays from the intel to the
radeon chip.

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[Bug 62246] LVDS screen mode switching fails

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=62246

--- Comment #3 from Felix von Leitner felix-freedesk...@fefe.de ---
The patch is on both kernels I tried, 3.9.0-rc1 and the git kernel.

I agree it sounds like vgaswitcheroo does not actually switch.
Are there any knobs for vgaswitcheroo that I could try?

For switching, I write ON\nDIS\nOFF to
/sys/kernel/debug/vgaswitcheroo/switch,
using three separate writes.

That used to work fine.

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