Created attachment 127886 [details] a copy of garbled image I've updated my system a few days ago and firefox started rendering pictures incorrectly like that (didn't notice any other apps to corrupt state): http://code.haskell.org/~slyfox/2016-11-09-22-57-08.png It's a 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (built into model name : Intel(R) Core(TM) i7-2700K CPU @ 3.50GHz) Xorg detects it as: [ 100.106] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20160919 [ 100.107] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 3000 Linux kernel: vanilla 4.9.0-rc3 Xorg server: 1.18.4 libdrm: 2.4.71 x11 video: xf86-video-intel 2.99.917_p20161103
I can confirm this. While on laptop screen only a few UI elements were garbled (awesome bar suggestion dropdown list), moving the window to secondary monitor garbled Firefox window contents severely.
Kernel: 4.9.0-rc4-bfq-gentoo xorg-server: 1.18.99.902 libdrm: 2.4.70 gnome-3.20 wayland (so no xf86-video-intel installed)
I filed https://bugzilla.mozilla.org/show_bug.cgi?id=1316618
Sergei, did you by any chance get to test any beta or aurora Firefox versions yet?
(In reply to Leho Kraav (:macmaN :lkraav) from comment #4) > Sergei, did you by any chance get to test any beta or aurora Firefox > versions yet? Same with firefox-50.0b11: http://code.haskell.org/~slyfox/2016-11-12-10-27-48.png
My laptop is Dell E7440, on Haswell 00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b) I'm actually somehow managing to work with it for now. The rule is not to resize windows on the secondary screen, or garbling gremlins will trigger. Thus far both mesa and Firefox people are mum. Not a good sign :/
Did we possibly just get a kernel level fix? https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=c4b8c570447a7bc171829532269878345b3ea9d0 is in v4.9-rc5 and Firefox behaves nicely now.
(In reply to Leho Kraav (:macmaN :lkraav) from comment #7) > Did we possibly just get a kernel level fix? > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ > ?id=c4b8c570447a7bc171829532269878345b3ea9d0 is in v4.9-rc5 and Firefox > behaves nicely now. Woohoo! I confirm upgrading linux kernel to v4.9-rc5 fixed all the visual glitches for me.
Okay, so to wrap up: kernel regression in 4.9-rc1; fixed in 4.9-rc5.
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