0
votes
0answers
41 views

Switching between apu igp and discrete gpu

I have a HP g6-2251st which has an APU(A4-4300M + HD 7420G) and a HD7670M discrete graphics. I dont know if it was possible before but i cant change between this two on latest 14.04 beta. I was ...
0
votes
2answers
791 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: ...
0
votes
0answers
112 views

Two radeons switcheroo just doesn't work

I've trying to get this to work for a couple weeks now. Most of what I've found involves one Intel and one Radeon. My laptop has two radeons and both are powered on at boot for some reason causing ...
1
vote
3answers
616 views

vgaswitcheroo on macbook 8,2: blank screen while switching from DIS to IGD

I followed this how-to to get vgaswitcheroo working on my macbook 8,2: How to switch between Gfx cards on Macbook Pro 15" 8.2 I can boot directly from refind (bypassing grub); and I get X ...
1
vote
0answers
1k views

Use vga switcheroo on MacBook Pro 8,2?

I have used the instructions provided by tomodachi here to get EFI kernel stub booting working properly. The Radeon card is now properly initialized and lspci is showing both graphics cards, which is ...
2
votes
0answers
2k views

hdmi audio works only with aplay -D alsa test wavs; open source radeon drivers; kernel 3.5 vgaswitcheroo

I've trolled the internets to make hdmi work on my system Ubuntu 12.04. software center kernel 3.5 uname: Linux ubuntu 3.5.0-18-generic #29~precise1-Ubuntu SMP...x86_64 x86_64 x86_64 ...
2
votes
0answers
555 views

Radeon HD + vgaswitcheroo

I have a Hp Envy4 1025tx machine. I've tried vgaswitcheroo and amdcccle. I'm happy with Vgaswitcheroo powersaving efficiency and amdcccle's performance. I want both of them on my system. Is there a ...
1
vote
1answer
3k 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. [ ...
4
votes
1answer
933 views

AMD/AMD GPU Switching

I have two GPU's in my laptop, both of which are AMD. Whenever I use the Catalyst Control Centre to change the GPU, nothing changes after reboot. In fact, when I do the fglrxinfo command the ...
0
votes
1answer
2k views

How can I enable switchable graphics in my Lenovo G770 laptop?

Previously I asked about the same problem in Ubuntu 11.04 with messed up drivers, but now I completely reinstalled system and updated it to latest 11.10. Last time, I tried using various drivers for ...
2
votes
1answer
1k views

how to switch back to ATI card after using switcheroo?

I have been using switcheroo to turn off my ATI Radeon HD5650 using the switch: echo OFF > /sys/kernel/debug/vgaswitcheroo/switch This has worked perfectly. I've added it to /etc/rc.local. The ...
2
votes
0answers
449 views

System freezes when using vgaswitcheroo [closed]

I'm using hybrid graphics on my notebook. It has an integrated Intel and a discrete Radeon HD 6650M graphic card. When I want to switch to discrete card, the screen freezes and I can't do anything. ...