[19:53] tjaalton: so i figured out how to reproduce that checkerboarding bug... it happens after suspend/resume, and i found yet another symptom of it [19:55] tjaalton: https://www.dropbox.com/s/7hj8qi3w3qc35jb/IMG_20150405_155434.jpg?dl=0 [19:56] both that and the checkerboarding in the global menu happen _only_ after a suspend/resume cycle [19:56] and the checkerboarding only happens at the top area of the screen [19:57] so if you recall that video i shared some time ago... https://www.dropbox.com/s/ez2v03oetppecgx/VID_20150324_020612.mp4?dl=0 [19:57] the checkerboarding only happens for the first few menu entries [19:58] and similarly, if i launch say a new full-screen firefox window, there is checkerboarding along the top of the screen as the window appears [19:58] i guess at this point i've got enough info to submit a bug report, so i'll do it [20:49] here's the report: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1440602 [20:49] Launchpad bug 1440602 in xorg (Ubuntu) "Graphics corruption after suspend/resume cycle" [Undecided,New] [20:49] tjaalton: wanna +1 it if you can reproduce with your PC also? [21:10] and also submitted a second bug... this one's even worse as it results in the system being unusable: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1440606 [21:10] Launchpad bug 1440606 in xorg (Ubuntu) "Screen garbled after changing display settings" [Undecided,New]