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hey guys,
This is the first time I have installed arch on my HP dv6t. One of the problems with this laptop is that is has hybrid graphics which has always been to wonky for me so I prefer to just disable the ATI card altogether, and solely rely on the intel integrated graphics. Im just not sure about how to get this to work with Arch. I previously had ubuntu installed and used this method to blacklist and disable the ATI card:
To power off ATI Radeon HD card, as root, edit the file /etc/rc.local and append (before "exit 0") :
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
(taken from http://ubuntucomputing.blogspot.com/201 … n-hp.html)
This doesn't work in arch because of what seems to be the lack of vgaswitcharoo and rc.local support.
Anyone Know how to accomplish this in arch.
Last edited by Dans564 (2011-12-11 22:11:32)
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You probably haven't mounted your debugfs, in order to do this:
# mount -t debugfs none /sys/kernel/debug
or to do this automatically edit your /etc/fstab:
debugfs /sys/kernel/debug debugfs defaults 0 0
Afterwards the rc.local method should work.
Greetings
matse
Last edited by matse (2011-12-11 15:39:22)
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thanks matse
So I changed the line:
none /sys/kernel/debug debugfs defaults 0 0
to:
debugfs /sys/kernel/debug debugfs defaults 0 0
and reedited my rc.local to contain:
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
Yet when I reboot and run:
sudo cat /sys/kernel/debug/vgaswitcheroo/switch
I get:
cat: /sys/kernel/debug/vgaswitcheroo/switch: No such file or directory
Does vgsswitcharoo need to be enabled from somewhere else as well??
anyway thanks for the help so far!
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Have you blacklisted the radeon module as well, e.g. by creating "/etc/modprobe.d/blacklist.conf" and writing this line to it:
blacklist radeon
//Edit:
In the wiki it is also explained how to achieve your goal, so blacklist radeon as mentioned above and write this to your rc.local:
modprobe radeon
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
happy hacking
Last edited by matse (2011-12-11 19:25:26)
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"sudo cat /sys/kernel/debug/vgaswitcheroo/switch" is still coming back with "cat: /sys/kernel/debug/vgaswitcheroo/switch: No such file or directory" even after adding modprobe radeon to rc.local.
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Would you report the output of
lsmod |grep radeon
and
mount |grep debugfs
Last edited by matse (2011-12-11 20:13:01)
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looks good to me, I'm more or less out here one thing you could check is whether you have the userspace ati and intel drivers installed, accoding to the wiki:
$ pacman -Q | grep -E "xf86-video-ati|xf86-video-intel"
if not install them.
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yup both installed
hey thanks for the help anyways, arch has a great community!
still if anyone out there has any ideas it would be much appreciated!
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making new thread with more specific problem title.
https://bbs.archlinux.org/viewtopic.php … 8#p1027518
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Please do not mark your thread as [CLOSED] because "closed" is used by the system for threads which cannot be written to anymore.
See https://wiki.archlinux.org/index.php/Fo … ow_to_Post.
Thank you,
-bernarcher
To know or not to know ...
... the questions remain forever.
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sorry bout that.
Have a good one
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