Questions related to switching GPUs using vgaswitcheroo on hybrid graphics systems.

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6
votes
2answers
8k views

How to permanently switch off discrete graphic card?

I got a integrated GD, which is Intel, and another discrete GD, AMD Radeon 6490 HD I am using ubuntu 11.10 1st, when I boot into Windows, my GD is indeed AMD Radeon 6490 HD, but when I boot into ...
4
votes
2answers
3k views

How can I disable ATI discrete graphic GPU at startup in Ubuntu 14.04 without BIOS?

I could disable ATI discrete graphics in Ubuntu 13.10 with this command: echo OFF > /sys/kernel/debug/vgaswitcheroo/switch But in Ubuntu 14.04 it does not work. cat ...
2
votes
2answers
11k views

I can not find /sys/kernel/debug/vgaswitcheroo/switch

I have enable switcheroo in kernel config . Why is there not /sys/kernel/debug/vgaswitcheroo/switch ? Linux ubuntu-raid-w500 2.6.38-10-generic #46-Ubuntu SMP Tue Jun 28 15:07:17 UTC 2011 x86_64 ...
1
vote
1answer
4k views

How to switch between Gfx cards on Macbook Pro 15" 8.2

I have a Macbook 15" Pro 8.2 Which apparently is supposed to be switchable between the GFX cards with vgaswitcheroo. But /sys/kernel/debug/ contains no switcheroo folder. syslog gives me this. [ ...
2
votes
1answer
2k views

vga_switcheroo and Intel HD 3000 on Ubuntu 12.04

I'm trying to get vga_switcheroo to enable my integrated Intel HD 3000 instead of my ATI card. My problem is that there is no vgaswitcheroo directory in /sys/kernel/debug/ on my system. > grep -i ...
3
votes
3answers
4k views

vgaswitcheroo not selecting discrete card

I have a Dell 5110 laptop that has hybrid graphics. I have tried using vgaswitcheroo to some limited success, but I have still not been able to select my discrete ATI 6470 card. I use the following ...
3
votes
1answer
3k views

How do I get the Radeon HD 6650M in my Lenovo G770 laptop working?

As stated in the topic, I have the following problem: there're two VGAs in my Lenovo G770 laptop with Ubuntu 11.04, namely Intel Mobile HD and AMD Radeon HD 6650M. And if integrated videocard is ...
1
vote
1answer
2k views

How to enable vga switcheroo on an Asus U41S?

I have Asus U41S notebook with 2 wideocards, Intel HD Graphics 3000 and GeForce GT540M. I want to turn off the GF videocard, and work only with Intel. On the internet I found out how to do this ...
0
votes
2answers
2k views

No vga/vgaswitcheroo in /sys/kernel/debug (Ubuntu 13.10)

I am aware of some of the other threads on this problem, but I have tried the options found in those without success: sudo su cat /sys/kernel/debug/vgaswitcheroo/switch gives cat: ...