https://bugs.kde.org/show_bug.cgi?id=388712
Bug ID: 388712 Summary: Highly unstable default Intel HD driver xorg-video-intel-modesetting Product: neon Version: unspecified Platform: Neon Packages OS: Linux Status: UNCONFIRMED Severity: crash Priority: NOR Component: Packages User Edition Assignee: neon-b...@kde.org Reporter: ma...@free.fr CC: j...@jriddell.org, neon-b...@kde.org, sit...@kde.org Target Milestone: --- Hi ! Using a Kaby Lake machine (Intel HD 630), Neon (user) uses by default the xserver-xorg-video-intel-modesetting driver for Intel HD Graphics. It was I think backported by the Neon team to get better performance than the default Ubuntu HD graphics driver. However, I figured out this driver would make my machine EXTREMELY unstable : several X crashes per day. On the same machine I had no crash at all within a year with an Nvidia card. I switched back to the Ubuntu driver xserver-xorg-video-intel-hwe which is based on a March GIT version (contrary to the Neon default one which is from the September GIT version) and have a perfectly stable desktop. Please note that before completely freezing the X server, strange phenomenoms begin to appear that could make one think there is something wrong with kwin. (black flickering, windows resizing themselves or not reacting properly to events). But as it only happens with this specific driver and leads to a complete freeze, I think it's way lower in the stack. I also run Neon on other machines using other Intel HD graphics (HD 3000 or 4000). They do not seem to suffer from the instability. Do other people use this driver with a Kaby Lake Intel Graphics ? Would you consider switching back to a safer / more supported driver by default ? NOTE 1 : I made also tons of tests : clean install, X edgers PPA, updated Intel microcode, etc. No difference at all. The crash even occurs when just using Thunderbird / Firefox with no special configuration (no accelerated layers). OIn the contrary, with the HWE driver, I can stress the GPU a lot (Steam games etc) and get no crash. NOTE 2 : ALL intel drivers (the Neon native modesetting of the Ubuntu HWE) ALSO suffer from slow performance, even when compositing is disabled, in many games. Phenomenon that doesn't occur under the Wayland session where all simple games are fast & smooth. I didn't test the stability under Neon but as I guess it doesn't use the X driver, it's not supposed to crash :-) -- You are receiving this mail because: You are watching all bug changes.