vgaswitcheroo isn't working in Ubuntu 12.04
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Forbidden404
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Published on 2012-05-18T15:39:56Z
Indexed on
2012/06/22
21:26 UTC
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I always used vgaswitcheroo to turn off my discrete graphic, I did a script to turn off in boot, but now, vgaswitcheroo isn't working anymore, I don't know why... look
forbidden404@forbidden404-Inspiron-N5110:~$ ls -l /sys/kernel/debug/vgaswitcheroo/switch
ls: cannot access /sys/kernel/debug/vgaswitcheroo/switch: Permission denied
forbidden404@forbidden404-Inspiron-N5110:~$ grep -i switcheroo /boot/config-*
/boot/config-3.2.0-20-generic:CONFIG_VGA_SWITCHEROO=y
/boot/config-3.2.0-23-generic:CONFIG_VGA_SWITCHEROO=y
/boot/config-3.2.0-24-generic:CONFIG_VGA_SWITCHEROO=y
forbidden404@forbidden404-Inspiron-N5110:~$ sudo su
[sudo] password for forbidden404:
root@forbidden404-Inspiron-N5110:/home/forbidden404# echo OFF > /sys/kernel/debug/vgaswitcheroo/switch
bash: /sys/kernel/debug/vgaswitcheroo/switch: No such file or directory
root@forbidden404-Inspiron-N5110:/home/forbidden404# ls -l /sys/kernel/debug/vgaswitcheroo/switch
ls: cannot access /sys/kernel/debug/vgaswitcheroo/switch: No such file or directory
And I'm not using any proprietary driver, k?
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