| Summary: | Kwin causes segfault crash of X-server while compositing mode is set. | ||
|---|---|---|---|
| Product: | [Plasma] kwin | Reporter: | Alex <alex.n.sidorov> |
| Component: | compositing | Assignee: | KWin default assignee <kwin-bugs-null> |
| Status: | RESOLVED UPSTREAM | ||
| Severity: | crash | ||
| Priority: | NOR | ||
| Version: | git master | ||
| Target Milestone: | --- | ||
| Platform: | Compiled Sources | ||
| OS: | Linux | ||
| Latest Commit: | Version Fixed In: | ||
| Sentry Crash Report: | |||
| Attachments: |
x-server log
info about my system, compiler, libc, binutils and cxx flags versions of packages X-org config file |
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Created attachment 54842 [details]
info about my system, compiler, libc, binutils and cxx flags
Created attachment 54843 [details]
versions of packages
Created attachment 54844 [details]
X-org config file
X11 uses an (expensive) client/server approach which on the other hand (theoretically) gurantees that clients (like kwin) cannot crash the server - ever. So this is a bug in X11, sorry. Consider to upgrade mesa (7.9-rc1 is known to have bugs anyway) and/or (for the moment) disable KMS by passing "nomodeset radeon.modeset=0" to the kernel (at GRUB) Eh. That's a pity. Sincerely speaking, Xorg team don't pay attention on this bug. What about KMS: alex@bio ~ $ zcat /proc/config.gz | grep KMS CONFIG_DRM_KMS_HELPER=y # CONFIG_DRM_RADEON_KMS is not set doesn't this mean that there is no KMS for Radeon in my kernel? (In reply to comment #5) > That's a pity. Sincerely speaking, Xorg team don't pay attention on this bug. Rationale? "We crash on OpenGL" doesn't sound much like a promotable feature... > doesn't this mean that there is no KMS for Radeon in my kernel? 'x11-libs/libdrm-2.4.23 USE="libkms -static-libs" VIDEO_CARDS="radeon -intel -nouveau -vmware" 0 kB' sounds like it does ("not set" doesn't mean "false" and it's "yes" by default since kernel "iforgottheversion" ;-) sorry, we cannot do anything when X crashes |
Created attachment 54841 [details] x-server log Version: SVN (using KDE 4.5.4) OS: Linux When I swith on desktop effects in Settings —> Desktop effects, the new xorg-server crashes after some different actions. For example, when I click on the address line in Chromium the dropdown list must appear but X-server crashes. When I minimize any window and then restore it — the X-server crashes in the same way. Here is a small bunch of trace messages in Xorg.0.log: Backtrace: [ 2066.627] 0: /usr/bin/X (xorg_backtrace+0x35) [0x484dd5] [ 2066.627] 1: /usr/bin/X (0x400000+0x5569e) [0x45569e] [ 2066.627] 2: /lib/libpthread.so.0 (0x7f1bfdcdc000+0xf470) [0x7f1bfdceb470] [ 2066.627] 3: /usr/lib64/xorg/modules/extensions/libglx.so (0x7f1bfb552000+0x308a1) [0x7f1bfb5828a1] [ 2066.627] 4: /usr/lib64/xorg/modules/extensions/libglx.so (0x7f1bfb552000+0x36915) [0x7f1bfb588915] [ 2066.627] 5: /usr/lib64/xorg/modules/extensions/libglx.so (0x7f1bfb552000+0x2d85b) [0x7f1bfb57f85b] [ 2066.627] 6: /usr/lib64/xorg/modules/extensions/libglx.so (0x7f1bfb552000+0x2e30b) [0x7f1bfb58030b] [ 2066.627] 7: /usr/lib64/xorg/modules/extensions/libglx.so (0x7f1bfb552000+0x2fc6e) [0x7f1bfb581c6e] [ 2066.627] 8: /usr/bin/X (0x400000+0x2e232) [0x42e232] [ 2066.627] 9: /usr/bin/X (0x400000+0x2489a) [0x42489a] [ 2066.627] 10: /lib/libc.so.6 (__libc_start_main+0xfd) [0x7f1bfcec4cdd] [ 2066.627] 11: /usr/bin/X (0x400000+0x24369) [0x424369] [ 2066.627] Segmentation fault at address 0x290 [ 2066.627] Fatal server error: [ 2066.627] Caught signal 11 (Segmentation fault). Server aborting [ 2066.627] [ 2066.627] If I switch off these effects at all (by clearing checkbox «Enable desktop effects» in Desktop Effects main page) — everything starts working well. You can learn more about my system and versions of packages in the attached files. I used these settings for Desktop effects: [General] * Improved window management * Shadows * Various animations [Advanced] * Compositing style: OpenGL * Keep window thumbnails: Only for Shown Windows * Disable functionality checks = False * OpenGL mode: Texture from Pixmap * Texture filter: Nearest(fastest) * Enable direct rendering: True * Use VSync: True Thanks, Alex. Reproducible: Always Steps to Reproduce: Just run the system and put it into described conditions. Run KDE with graphic effects + the latest xorg-server, then minimize and maximize any window. Actual Results: X-server crashes with segfault