ugly freeze bug with optimus, nvidia blob and KWin

[nocomprom1se]

Hello there,

i owned an new Optimus Laptop (ASUS N550JV) and every 10 minutes or so (okay its random but often) when I'm using my touchpad, xorg freezes; I experience a hard graphic bug and my inputs won't get recognized.

After some googling i found out that some *buntuers got the same Problem.
https://bugs.launchpad.net/ubuntu/+source/nvidia-prime/+bug/1220426

As this renders the usability of my laptop in mobile situations kind of useless (You don't know when it's going to happen), I want to debug this error as much as i can.

Running nvidia 334.16-r7 (everything higher than 313 got this problem - i cant tell bout other drivers for they dont support my GT 750M)
Xorg 1.14.3-r2
Mesa 9.1.6
no bumblebee (modesetting with nvidia.ko)

Logs:
dmesg: http://bpaste.net/show/181139/
/var/log/messages http://bpaste.net/show/181140/
Xorg-log http://bpaste.net/show/181141/


UPDATE:
I don't really know what causes the issue, it could be that my touchpad triggers something in KWin, the 'screen-destruction-bug' with compositing on is not new.
The glitch is also triggered after waking up from suspend/hibernating.
KDE devs say the bug is related to nvidia.ko...

KDE Bugs:
https://bugs.kde.org/show_bug.cgi?id=323686
https://bugs.kde.org/show_bug.cgi?id=322975


70% Workaround:
Switch between VTs with Ctrl+Alt+F key
restart KWin Compositing through double pressing Alt+Shift+F12.

[nocomprom1se]

it seems to be related to KWin compositing, updated title.
Workaround updated.

I don't even know whether it's related to my touchpad or not.

[nocomprom1se]

last helpless bump

[logistiker]

I just started dabbling with official nvidia optimus support and I noticed the same thing. Everythng works fine when intel is the main card but when I switched it over to use nvidia and intel as the output card, I get these random freezes of my mouse and keyboard within X. If I hit ctrl+alt+f1 and then move back to X with ctrl+alt+f7, the keyboard and mouse works again.

System info:

x11-drivers/xf86-video-intel-2.21.15
sys-kernel/gentoo-sources-3.17.0
x11-drivers/nvidia-drivers-343.22-r2
kde-base/kwin-4.11.9
media-libs/mesa-10.2.6
x11-base/xorg-server-1.15.0

lspci:

[logistiker]

It seems the ubuntu people at that launchpad link are also still experiencing problems. They think there might be some bug with the touchpad since they found if you change the touchpad so it's recognized as a regular mouse or disable it entirely and use a usb mouse, then the random freezing goes away. That's hardly a solution but it's a workaround at least.

[Arthanis]

Im using proprietary optimus nvidia-drivers (without bumblebee/primus). I can confirm that when I'm using nvidia, X "freezes" , but as said here: " If I hit ctrl+alt+f1 and then move back to X with ctrl+alt+f7, the keyboard and mouse works again. "

I don't know about you guys, but I'm my case it's not that the keyboard and mouse stop working. If during the frezze I move my cursor, type something on the screen or some window gets moved or closed, when I do the ctrl+alt+f1 and f7 trick, the screen refreshes and shows everything that had changed during the freeze, so it's more like X stopped from refreshing the framebuffer or something like that.

Is this bug affecting bumblebee/primus users as well? So the workaround is to disable evdev for my keyboard and mouse? How do I choose the new drivers for my keyboard/mouse/trackpad?
Thanks in advance.

[logistiker]

[Arthanis]

Thanks for the quick reply. I guess I will be switching to primus after all. Is there any link to track nvidia measures about the issue? Thanks once again.

[logistiker]