AMD RadeonSI Graphics Driver Still Troublesome On Linux

[MrCooper]

Also, this commit made on 10th September 2013, fixes hangs in Unigine Tropics and various games - see FDO bug 69340

The bug fixed by that commit also causes most textures to be untiled, which could have a negative impact on performance.

[darkbasic]

Hello, Alex,

I have muxless laptop with intel hd 4000 + radeon 7750M. So physically there is no display connected to discrete graphic card. I have the following results of unigine tropics benchmark (1024x768 with all high settings):

intel hd 4000                   22.7 fps
radeon 7750M (fglrx)            44.9 fps
radeon 7750M (radeonsi auto)     9.6 fps
radeon 7750M (radeonsi high)    24.1 fps

Software:
kernel 3.11.1 with dpm enabled
The rest is from today's git

With auto my radeon GPU is always in low state:

uvd    vclk: 0 dclk: 0
power level 0    sclk: 30000 mclk: 15000 vddc: 850 vddci: 900 pcie gen: 2

Only using high performance level helps me. In bug report 69395 you attached a patch. Will it help in my laptop's case?

Also do you know what is the state of dynamic switching of discrete GPU? Dave merged nouveau patches for nvidia and his branch for radeons wasn't touched for three weeks. Is there a chance to have this support in 3.12 kernel?

Hi,
The patch did work for me, you should try it

Also, if someone is interested here is my backported graphic stack for the kernel 3.11.1:

http://www.linuxsystems.it/linux-drm-graphic-stack-backports/

[Rakot]

Hi,
The patch did work for me, you should try it

Also, if someone is interested here is my backported graphic stack for the kernel 3.11.1:
http://www.linuxsystems.it/linux-drm...ack-backports/

I saw you bug report. I'll give your patches a try. Thanks.