Hello, Dave!

I have a hybrid muxless laptop with intel+radeon: #lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Cape Verde [Radeon HD 7700M Series]

I have some questions related to this series of patches. When I power down discrete card by vgaswitcheroo, restart X server and turn on radeon card again, xrandr doesn't recognize my discrete card and only shows the intel one. Is this a bug or a feature of X server? And how would this behavior change with this patch?

Also sometimes I have the following configuration: # cat /sys/kernel/debug/vgaswitcheroo/switch 0:DIS: :Pwr:0000:01:00.0 1:IGD:+:Pwr:0000:00:02.0

In this case if I do # echo OFF > /sys/kernel/debug/vgaswitcheroo/switch the system hangs and doesn't respond (ssh, magic keys etc.).

In the meantime for a # cat /sys/kernel/debug/vgaswitcheroo/switch 0:IGD:+:Pwr:0000:00:02.0 1:DIS: :Pwr:0000:01:00.0

# echo OFF > /sys/kernel/debug/vgaswitcheroo/switch powers down discrete card successfully.

Would it be resolved with these patches?

Hohahiu

PS. Should I open bug report for these issues?