On 02/04/2015 11:26 AM, Jani Nikula wrote:
On Mon, 02 Feb 2015, Sakari Kapanen sakari.m.kapanen@student.jyu.fi wrote:
Dear maintainers,
On an Asus Zenbook UX32VD laptop with an i5-3317U CPU and Intel HD4000 graphics, I'm experiencing the following with the latest 3.19rc6 mainline kernel (built from the Arch Linux AUR package: https://aur.archlinux.org/packages/linux-mainline/ ). The problem is related to the compton compositor: https://github.com/chjj/compton
Hi, a full dmesg from boot to the problem with drm.debug=14 module parameter set might be useful. Also, you may get fastest results if you do a git bisect from a good to bad kernel.
BR, Jani.
Hi, I did a bisect between 3.18 to 3.19-rc1. I could only narrow it down to ~110 commits. They were based on 3.17-rc5 which wouldn't boot on my computer due to an unrelated kernel panic which I couldn't resolve, so I couldn't bisect any further. Sorry about that!
I noticed one thing: the warnings I mentioned appear only when threader IRQs are enabled via the `threadirqs` kernel flag. Without that flag, I didn't get any of those warnings on any kernel.
I attached the bisect log, in which the commits that were left are shown. Also, there's a dmesg log with drm.debug=14 set. The first warning appears at 4.895940 when X is started (no compton yet). Compton was started at ~14, and the first warning due to it appears at 15.009088.
Please let me know if I any other information would be useful.
BR, Sakari.