X.Org using Intel HD card instead of AMD card
I have a HP dv6-6173cl with switchable graphics (Intel HD with a AMD Radeon HD 6770M running Arch Linux 64-bit. Lately, I've been forcibly switched over to my Intel card by X.Org. My game performance has worsened and I wanted to get it back to normal by switching back to my Radeon card. However, even after removing xf86-video-intel and intel-dri, and after making a custom xorg.conf with the following contents:
Code:
Code:
Can this be changed in a config file somewhere? Why is this happening? Alex Brinister |
If it's "switchable" graphics, you need to go into your BIOS to choose which graphics chip you want to use as your primary output.
Don't forget to reinstall the AMD Catalyst graphics drivers. |
This laptop's BIOS is really bare and has n option other than choosing "Fixed" or "Dynamic" for the Switchable graphics which in my experience changes absolutely nothing (at least in Linux). I've tried with both option to no avail.
I'm using the free radeon drivers because I have the same performance with both and the Catalyst drivers are much more of a hassle. Alex Brinister |
2 Attachment(s)
Here are my full dmesg and Xorg.0.log
Alex Brinister |
After further investigation, I have found an in-kernel tool for switchable graphics called vga_switcheroo.
To use vga_switcheroo, modesetting must be enabled for both drivers. On my kernel command line, I put both Code:
radeon.modeset=1 i915.modeset=1 Code:
# Load the Radeon module Code:
[fluffypony@0xffeDAEMONPAWNY1969 ~]$ sudo cat /sys/kernel/debug/vgaswitcheroo/switch Code:
sudo bash -c "echo DIS > /sys/kernel/debug/vgaswitcheroo/switch" Code:
sudo bash -c "echo IGD > /sys/kernel/debug/vgaswitcheroo/switch" Alex Brinister |
I switched to the proprietary drivers (again) so I guess this is solved for now.
Alex Brinister |
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