/srv/irclogs.ubuntu.com/2015/04/09/#ubuntu-x.txt

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furkantjaalton: confirmed that it's not a radeon bug... same issue with fglrx, and the checkerboarding doesn't happen in kubuntu03:28
furkani posted another comment on the bug report again a few hours ago, saying that i had tested it in kubuntu03:29
furkanso it's probably not Xorg (since it doesn't happen on KDE), and almost definitely not the open-source radeon driver (since i don't think it shares any code with fglrx), so i think that probably leaves Unity/compiz03:30
furkantjaalton: when you get the opportunity, would you mind testing again with both screens not aligned at the top, i.e. with y > 0 for the landscape monitor03:31
furkanbut how could it be unity/compiz... because it first started happening when i upgraded to xserver-xorg-lts-vivid from the x staging ppa when i was running trusty03:33
furkanso then maybe it *is* an xorg bug03:33
furkanwell at least i have dpms back, after switching to fglrx03:35
furkan(but i did lose my virtual terminals)03:40
furkanwith an AMD card on linux i guess there's no winning combination03:40
tjaaltonkde uses qt, not gtk04:36
tjaaltonand use xterm or such ;)04:37
ricotztseliot, jfyi pushing blob 346.59 tarballs to xorg-edgers07:37
tseliotricotz: ok, I'll use your tarballs then07:37
tseliotso that you don't have to re-upload them07:37
ricotztseliot, thanks, i hope it didnt already clash with your work07:37
tseliotricotz: no problem, I'll delete mine and download yours. I'm still testing the packages07:38
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tjaaltonfurkan: you'll get your dpms back in the next vivid kernel update20:50
tjaaltonoh it got tagged, 3.19.0-13.1320:50
furkantjaalton: ah, great news, thanks :D21:37
furkani hope it continues to work after suspend/resume as well!21:38
furkanand.. i've been playing around with kde (i installed the kubuntu-desktop package)21:39
furkani'm finding it really strange that kde doesn't crash after changing my display settings, but unity does21:39
furkanthe display corruption happens in both, but kde recovers whereas unity doesn't21:40
furkanand the totally crazy thing about the display corruption is that it shows parts of the screen buffer from the previous boot21:40
furkanlike first when i booted up into a kubuntu live usb, and changed the monitor configuration, when it was switching resolutions you could see portions of what i had open on my screen before rebooting21:41
furkanand likewise when i rebooted back into my ubuntu install, when changing resolutions i would see portions of the wallpaper from the kubuntu live cd21:42
furkanif it's on a fresh boot, i see white rectangles instead21:42
furkanso it's as if there are portions of old stuff that's left over in the VRAM21:43
furkanso if you shut down the PC, it gets cleared, but if you do a reboot, those contents are still in the VRAM and they get "leaked"21:44
furkani'm sure that's an upstream issue, as it doesn't happen with fglrx21:44
furkanbut somehow kde manages to handle the situation anyway21:45
furkanso that's why i installed kde, but i can't stand it, gonna nuke it now and go back to unity21:46
furkantjaalton: i just added the kernel testing ppa and installed 3.19.0-13, and also did an apt-get upgrade and noticed that my libdrm* packages got upgraded... now dpms is back (even after suspend/resume) and my desktop no longer crashes after a resolution change... so i will close that bug22:31
furkani still get the checkerboard corruption after suspend/resume... but, not the worst out of those bugs22:32
furkantjaalton: never mind... resolution change causes a black screen (it used to show corruption, now just black) - it was only changing the screen's vertical position which no longer triggered screen corruption + crash22:43

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