From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 117131] vga_switcheroo does not switch IGP -> DIS ( IGP == i915 , DIS == radeon )
Date: Mon, 25 Apr 2016 17:49:31 +0000 [thread overview]
Message-ID: <bug-117131-2300-W9TfTIo1ut@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-117131-2300@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=117131
--- Comment #8 from Jason Vas Dias <jason.vas.dias@gmail.com> ---
As stated on the web-page quoted above ,
( https://wiki.archlinux.org/index.php/PRIME )
an example xorg.conf to use the discrete card
as primary GPU is:
# Discrete Card as Primary GPU
Section "ServerLayout"
Identifier "layout"
Screen 0 "nouveau"
Inactive "intel"
EndSection
Section "Device"
Identifier "nouveau"
Driver "nouveau"
BusID "PCI:x:x:x" # Sample: "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "nouveau"
Device "nouveau"
EndSection
Section "Device"
Identifier "intel"
Driver "intel"
BusID "PCI:x:x:x" # Sample: "PCI:0:2:0"
EndSection
Section "Screen"
Identifier "intel"
Device "intel"
EndSection
My xorg.conf is basically the same with the string 'nouveau'
replaced by 'ati' .
It started out as simple as this, but then grew as I tried
every conceivable method to specify the modes , but still
the X-server exits with a 'No modes.' error in every case .
The reason the X-server cannot determine the modes is because
of this Linux bug - the radeon DRM driver makes incorrect ACPI
calls.
Also I think that if vga_switcheroo does not work or is
incapable of working , as it provably is in the above
example, it should return EIO on the write to the
debugfs control 'switch' file , and not proceed to
display spurious data in that file.
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next prev parent reply other threads:[~2016-04-25 17:49 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-24 19:17 [Bug 117131] New: vga_switcheroo does not switch IGP -> DIS ( IGP == i915 , DIS == radeon ) bugzilla-daemon
2016-04-24 19:28 ` [Bug 117131] " bugzilla-daemon
2016-04-24 19:46 ` bugzilla-daemon
2016-04-24 20:30 ` bugzilla-daemon
2016-04-24 20:44 ` bugzilla-daemon
2016-04-24 23:21 ` bugzilla-daemon
2016-04-25 13:58 ` bugzilla-daemon
2016-04-25 17:43 ` bugzilla-daemon
2016-04-25 17:49 ` bugzilla-daemon [this message]
2016-04-25 17:59 ` bugzilla-daemon
2016-04-25 18:49 ` bugzilla-daemon
2016-04-25 19:02 ` bugzilla-daemon
2016-04-25 19:25 ` bugzilla-daemon
2016-04-25 19:39 ` bugzilla-daemon
2016-04-25 20:19 ` bugzilla-daemon
2016-04-25 20:48 ` bugzilla-daemon
2016-04-25 20:51 ` bugzilla-daemon
2016-04-26 0:43 ` bugzilla-daemon
2016-04-26 15:26 ` bugzilla-daemon
2016-04-26 15:52 ` bugzilla-daemon
2016-04-26 16:55 ` bugzilla-daemon
2016-04-26 18:37 ` bugzilla-daemon
2016-04-26 18:38 ` bugzilla-daemon
2016-04-26 18:50 ` bugzilla-daemon
2016-04-26 22:11 ` bugzilla-daemon
2016-04-26 22:16 ` bugzilla-daemon
2016-04-26 22:20 ` bugzilla-daemon
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