https://bugs.freedesktop.org/show_bug.cgi?id=67002
--- Comment #12 from jackdachef@gmail.com --- (In reply to comment #11)
I had to restart due to some other issue
and it wouldn't "successfully" resume anymore:
the lag/slowdown was there again
forcing performance_level to "low" or "auto" didn't seem to make a difference
so I'll try a 3.11-rc2* kernel in the weekend then - provided of course that it runs without other problems
could it be related to reboot from Windows (windows 8 -> linux) that resume worked properly ?
had the chance to test it on latest 3.11-rc2-something kernel with most recent drm-fixes
and exactly the same:
after resume (from X - suspended from the Xfce menu at the right corner) the composited desktop is really really slow + the following behavior (I try to make the description of the "slowness" as clear as possible so you can draw conclusions easily)
and after some time of slow browsing via chromium, dmesg-output without crashing, etc. - surfing over and attempting to type in some data into this bug entry - X crashed and xdm/lightdm attempted several times to reload until screen stayed black with only one cursor point blinking at the left upper corner - attempted to switch to VT1, VT2, etc. didn't work, magic sysrq + r and then attempt to switching to VT (which had worked with patched up 3.10 kernel) for a short moment showed the logon line on VT1 and then screen stayed black, tried that several times - then it stayed completely black only with the cursor at the left upper corner blinking
Jul 27 22:43:57 localhost kernel: [ 1380.040292] radeon 0000:01:00.0: GPU lockup CP stall for more than 10000msec Jul 27 22:43:57 localhost kernel: [ 1380.040300] radeon 0000:01:00.0: GPU lockup (waiting for 0x0000000000000431 last fence id 0x0000000000000430) Jul 27 22:44:06 localhost kernel: [ 1388.818320] SysRq : Keyboard mode set to system default Jul 27 22:44:09 localhost kernel: [ 1391.668196] SysRq : Keyboard mode set to system default Jul 27 22:44:25 localhost kernel: [ 1407.683331] SysRq : Keyboard mode set to system default Jul 27 22:44:28 localhost kernel: [ 1410.906535] SysRq : Keyboard mode set to system default Jul 27 22:44:29 localhost kernel: [ 1411.308996] SysRq : Terminate All Tasks
after that rebooted via magic sysrq + reisub
"slowness":
*) my default 2 gnome-terminal windows (the left one attached to the left side of the monitor output), so that at the right side there's room for almost a third window (http://img845.imageshack.us/img845/8577/kfe8.jpg)
*) when left-clicking on the middle of the left gnome-terminal and then moving the window slowly (keeping left button pressed) the window slowly (with stuttering) is shown on the movement, where it normally is shown during the whole movement at every position - so it rather resembles a slide-show than smooth movement with approx. 0.5 cm distance between the corners of the window on a 22" screen
*) when attempting to fast moving the window (accelerated mouse movement) the cursor - like in a loop - is moving diagonally from the upper left corner of the window across the right lower corner of the window (a little bit further) - seems like the driver (is it even the driver ?) has issues working with the screen resolution
also: video acceleration of the pepperflash flash in chromium/google-chrome doesn't seem to work properly with the new DPM driver - every video seems to stutter (either "low" or "auto")
with the old driver even at "low" profile it appeared smooth
latest attempts on 3.10-patched kernel and 3.11-rc2* were compiled with gcc 4.7.2