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lordalbert
l33t
Joined: 26 Nov 2006
Posts: 840
Location: Italy
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 Posted: Sat Aug 02, 2014 1:02 am Post subject: [solved] disable ATI card (in a hybrid laptop) |
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Hi,
in order to increase the battery time and to improve cooling, i'd like to disable ati video card, and use only the Intel integrated. Sometimes it is possible disable it in the BIOS, but i can't.
So, can i, in gentoo, power off the ati card and use only intel?
Thank you
Last edited by lordalbert on Sun Aug 03, 2014 4:36 pm; edited 1 time in total |
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khayyam
Watchman
Joined: 07 Jun 2012
Posts: 6227
Location: Room 101
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| Posted: Sat Aug 02, 2014 8:24 am Post subject: Re: disable ATI card (in a hybrid laptop) |
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| lordalbert wrote: | | in order to increase the battery time and to improve cooling, i'd like to disable ati video card, and use only the Intel integrated. Sometimes it is possible disable it in the BIOS, but i can't. So, can i, in gentoo, power off the ati card and use only intel? |
lordalbert ... you have VGA_SWITCHEROO enabled?
/etc/local.d/vgaswitcheroo.start
| Code: | #!/bin/sh
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch |
HTH & best ... khay |
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lordalbert
l33t
Joined: 26 Nov 2006
Posts: 840
Location: Italy
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| Posted: Sat Aug 02, 2014 8:30 am Post subject: Re: disable ATI card (in a hybrid laptop) |
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| khayyam wrote: | | lordalbert wrote: | | in order to increase the battery time and to improve cooling, i'd like to disable ati video card, and use only the Intel integrated. Sometimes it is possible disable it in the BIOS, but i can't. So, can i, in gentoo, power off the ati card and use only intel? |
lordalbert ... you have VGA_SWITCHEROO enabled?
/etc/local.d/vgaswitcheroo.start
| Code: | #!/bin/sh
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch |
HTH & best ... khay |
seems i haven't switcheroo on the system
| Code: |
$ locate vgaswitcheroo
$
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I searched it in portage, but i can't find it (with that name, or similar) |
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khayyam
Watchman
Joined: 07 Jun 2012
Posts: 6227
Location: Room 101
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| Posted: Sat Aug 02, 2014 8:42 am Post subject: |
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lordalbert ...
its a kernel option (hence capitalisation).
| Code: | | # grep VGA_SWITCHEROO /usr/src/linux/.config |
best ... khay |
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lordalbert
l33t
Joined: 26 Nov 2006
Posts: 840
Location: Italy
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| Posted: Sat Aug 02, 2014 8:51 am Post subject: |
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it is enabled
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$ grep VGA_SWITCHEROO /usr/src/linux/.config
CONFIG_VGA_SWITCHEROO=y
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So, can i just create the missing file /sys/kernel/debug/vgaswitcheroo/switch or it must be created by another script? |
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khayyam
Watchman
Joined: 07 Jun 2012
Posts: 6227
Location: Room 101
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| Posted: Sat Aug 02, 2014 9:24 am Post subject: |
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| lordalbert wrote: | | So, can i just create the missing file /sys/kernel/debug/vgaswitcheroo/switch or it must be created by another script? |
lordalbert ... I'd expect it to exist if debugfs is mounted.
| Code: | # grep DEBUG_FS /usr/src/linux/.config
# mount -t debugfs debugfs /sys/kernel/debug |
best ... khay |
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lordalbert
l33t
Joined: 26 Nov 2006
Posts: 840
Location: Italy
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| Posted: Sat Aug 02, 2014 9:32 am Post subject: |
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| Quote: |
$ grep DEBUG_FS /usr/src/linux/.configb
CONFIG_DEBUG_FS=y
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# mount -t debugfs debugfs /sys/kernel/debug
mount: debugfs is already mounted or /sys/kernel/debug busy
debugfs is already mounted on /sys/kernel/debug
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| Quote: |
# mount | grep debugfs
debugfs on /sys/kernel/debug type debugfs (rw,nosuid,nodev,noexec,relatime)
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Debugfs is mounted. But i haven't vgaswitcheroo directory/files 
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# ls /sys/kernel/debug/
acpi bdi boot_params clk dma_buf dri extfrag hid ieee80211 kprobes mce mei pinctrl pkg_temp_thermal sleep_time suspend_stats tracing usb wakeup_sources x86
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khayyam
Watchman
Joined: 07 Jun 2012
Posts: 6227
Location: Room 101
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| Posted: Sat Aug 02, 2014 10:10 am Post subject: |
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| lordalbert wrote: | | Debugfs is mounted. But i haven't vgaswitcheroo directory/files |
lordalbert ... no idea then, perhaps vgaswitcheroo requires some parameter passed in order to enable (unlikely).
best ... khay |
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lordalbert
l33t
Joined: 26 Nov 2006
Posts: 840
Location: Italy
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| Posted: Sat Aug 02, 2014 10:45 am Post subject: |
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ok, i found this on askubuntu:
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If you are not using the open-source radeon driver (or the nouveau driver in case of nvidia hardware), there won't be a /sys/kernel/debug/vgaswitcheroo/switch file. (ignoring hacks like asus-switcheroo and byo-switcheroo). Disabling KMS ("modeset=0") turns off this functionality too.
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Now i'm using fglrx drivers. I'll change it to opensource one and then try it.
UPDATE: In order to have /sys/kernel/debug/vgaswitcheroo/switch file, you need to use radeon (open-source) driver AND have linux-firmware insalled.
With radeon driver, kwin crash! Now i try to power-off ATI card, and use only intel... |
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Fitzcarraldo
Advocate
Joined: 30 Aug 2008
Posts: 2034
Location: United Kingdom
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| Posted: Sun Aug 03, 2014 10:33 am Post subject: |
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I remembered reading about configuring Gentoo to switch between FGLRX and Intel: Fglrx-hybrid-graphics.
_________________
Clevo W230SS: amd64, VIDEO_CARDS="intel modesetting nvidia".
Compal NBLB2: ~amd64, xf86-video-ati. Dual boot Win 7 Pro 64-bit.
OpenRC udev elogind & KDE on both.
Fitzcarraldo's blog |
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lordalbert
l33t
Joined: 26 Nov 2006
Posts: 840
Location: Italy
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| Posted: Sun Aug 03, 2014 4:36 pm Post subject: |
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I discover i can use only the intel card also with fglrx driver.
Using fglrx driver, run as root /opt/bin/amdcccle (the Catalyst Control Center gui) and you can switch video card  |
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Fitzcarraldo
Advocate
Joined: 30 Aug 2008
Posts: 2034
Location: United Kingdom
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veryfatcat
n00b
Joined: 02 Dec 2014
Posts: 1
Location: Asia
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| Posted: Mon Dec 08, 2014 6:39 am Post subject: |
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I solved the same problem by -
1) Clear xorg.conf
2) Reset X server from the start - I followed https://wiki.gentoo.org/wiki/Xorg/Configuration
3) Use Intel drivers initially (do not enable any radeon driver)
4) Then follow http://gentoo-en.vfose.ru/wiki/Fglrx-hybrid-graphics
5) Make sure I `emerge --ask --changed-use --deep @world` whenever needed (in above wiki articles)
So far - I can use the amdcccle, or switch between graphic cards with command line. |
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