Summary: | sys-kernel/gentoo-sources-2.6.36-r5: Graphical glitches (OpenGL) | ||
---|---|---|---|
Product: | Gentoo Linux | Reporter: | Gian <news.gdc> |
Component: | [OLD] Unspecified | Assignee: | Gentoo X packagers <x11> |
Status: | RESOLVED OBSOLETE | ||
Severity: | normal | CC: | bkohler, jeremy.william.murphy |
Priority: | High | ||
Version: | unspecified | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Package list: | Runtime testing required: | --- | |
Attachments: |
Extreme-tuxracer screenshot
Screenshot from gl-117 purple tint in desktop switcher widget My dmesg KDE window shadow is a flat green rectangle. |
Description
Gian
2010-12-23 17:45:45 UTC
Created attachment 257881 [details]
Extreme-tuxracer screenshot
Created attachment 257882 [details]
Screenshot from gl-117
Please also attach dmesg output. Do you use compositing? Do you also see the glitches when starting OpenGL applications with LIBGL_ALWAYS_INDIRECT=1 ? I do use compositing (KWin). I'm not at home right now, but I'll attach dmesg and try with LIBGL_ALWAYS_INDIRECT in a few days. Created attachment 258237 [details]
purple tint in desktop switcher widget
Hmmm, I was just thinking of changing my package-specific bug to much the same summary. I've seen a few graphical glitches since doing the same upgrade, one of which I have documented as #348930, and another that I will attach now. I assume that any graphical glitch in KDE could be related, if one is using OpenGL compositing in KWin?
What exactly is the glitch in ETR? Is it the purple banner thing? Of course I ask because the glitch in my KDE desktop switcher is the purple/indigo tint, which should not be there.
Oh, and by coincidence (or not), I also have an r700-era Radeon card (4850). I have only tested the classic driver so far because I thought gallium was still highly experimental for r600-r700. Created attachment 258360 [details]
My dmesg
LIBGL_ALWAYS_INDIRECT=1 doesn't help. Neither does switching off compositing, though the symptoms change slightly. (The artifacts are coloured instead of black) To me it looks a lot like the textures somehow get corrupted.
@Jeremy: Yeah, the Gallium drivers are still experimental, but they're only an eselect away, so I thought I'd give it a try. :) There are actually several glitches in the extreme-tuxracer screenshot: those black squares on the floor shouldn't be there. Also this purple banner is shown multiple times. (It looks like the mipmaps somehow get mixed up or something) Additionally the tree in the foreground is torn. Created attachment 258423 [details]
KDE window shadow is a flat green rectangle.
I hope you don't mind my piggybacking on your bug, Gian! But I assume we are suffering glitches for the same reason, so it makes sense to report in one place and pool data. Cheers.
@Jeremy: No, I don't mind. Have you tried extreme-tuxracer or gl-117, to see if you get the same glitches? I haven't seen any glitches in KDE lately. ETR went weird as soon as the actual level started, I had to restart X. Maybe that was because I chose 2048x1152 and it wasn't expecting it. I'll try it again next time I want to reboot. gl117 had the same glitch as you, where the ground is covered in that repeating pattern of something... planes? We should try downgrading mesa and xorg-server separately, see if we can isolate the problem to one or the other. I tried: neither downgrading xorg-server alone nor xorg-server and mesa helped. (In reply to comment #12) > I tried: neither downgrading xorg-server alone nor xorg-server and mesa helped. Hold on... surely downgrading both of them must have fixed it? Otherwise this bug is misleading, as you said "Since upgrading..." in your description. I just downgraded mesa back to 7.8.2 and I haven't seen any of the glitches that I was experiencing yet, however gl-117 still had the same glitches and ETR just crashed so I have removed it. So I think you and I are talking about different glitches after all, even though your summary seemed appropriate for mine. I think the glitches that I'm seeing are specific to mesa-7.9 after all and not related to xorg-server. If you cannot resolve the glitches by downgrading X and mesa, then you need to consider changing the summary so that it's not specific to those versions. However, keep in mind that downgrading X completely is a tedious process given all the packages in x11-apps, x11-libs and x11-proto that may affect the result. Anyway, I leave you to it, good luck! :) Sorry about the noise after all. Turns out that the problem wasn't the X server nor mesa, but the new kernel. I had also upgraded the kernel to 2.6.36-r5 right before upgrading X, and going back to 2.6.34 solved the glitches. (In reply to Gian from comment #14) > Turns out that the problem wasn't the X server nor mesa, but the new kernel. > I had also upgraded the kernel to 2.6.36-r5 right before upgrading X, and > going back to 2.6.34 solved the glitches. Is this still a problem with a recent stable kernel, or has this issue faded away? (In reply to Ben Kohler from comment #15) > (In reply to Gian from comment #14) > > Turns out that the problem wasn't the X server nor mesa, but the new kernel. > > I had also upgraded the kernel to 2.6.36-r5 right before upgrading X, and > > going back to 2.6.34 solved the glitches. > > Is this still a problem with a recent stable kernel, or has this issue faded > away? Definitely faded away for me. If anyone can still reproduce this on recent versions, feel free to let us know. |