<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [hsw iommu] i915 0000:00:02.0: GPU HANG: ecode 7:0:0x00000000, hang on rcs0" href="https://bugs.freedesktop.org/show_bug.cgi?id=111790#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [hsw iommu] i915 0000:00:02.0: GPU HANG: ecode 7:0:0x00000000, hang on rcs0" href="https://bugs.freedesktop.org/show_bug.cgi?id=111790">bug 111790</a> from <a class="email" href="mailto:j-p-t@gmx.net" title="JPT <j-p-t@gmx.net>"> JPT</a> <pre>Hi, I've got the problem that whenever I do disk traffic, after a few minutes the GUI becomes laggy. Soon it locks completely. Sometimes the GUI simply locks, without any background work done. I once got the mentioned GPU HANG message but I didn't fetch the error log. So I am still trying to produce this error message again. error log still is empty. I know of the problems with Linux and swap, but this is just far worse and doesn't happen at all on my laptop with very similar setup how to reproduce: - just read or write a lot of data, let's say 100 GB via DD, CP, GUI... as you like - linux cache size increases until it starts swapping - SWAPOUT is around 10 to 100 thousend pages (per atop cycle I believe) - after a few minutes the GUI is locked. - when the job is finished the gui suddenly is ok again. and this completely without the usual lagging known from a swapping system. my environment - Kubuntu 19.10 - Kernel 5.3.0-19 - Intel i5-9600K I already tried, without success: - fresh installation of Kubuntu on a new disk - new mouse - vm.swappiness = 10 and vm.vfs_cache_pressure=50 - uninstalling xorg-intel driver BTW, as alex wrote, I believe this problem disappeared with kernel 4.15.0 another remark. I usually don't have any swap, because of the bad behavior of Linux when swapping. I only do have swap now, because else in the exact same circumstances as above kswapd went amok instead, making the system even more unstable/unusable. Alex, could you just try what happens with your GUI when you produce much disk traffic?</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>