| Summary: | [855GM] glxgears segfaults | ||
|---|---|---|---|
| Product: | Mesa | Reporter: | Luke Camden <luke.camden> |
| Component: | Drivers/DRI/i915 | Assignee: | Eric Anholt <eric> |
| Status: | RESOLVED FIXED | QA Contact: | |
| Severity: | major | ||
| Priority: | medium | CC: | net147 |
| Version: | unspecified | Keywords: | NEEDINFO |
| Hardware: | x86 (IA32) | ||
| OS: | Linux (All) | ||
| Whiteboard: | |||
| i915 platform: | i915 features: | ||
Perhaps I should post these things too. If there is anything else that might be helpful, let me know. $ lspci 00:00.0 Host bridge: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02) 00:00.1 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02) 00:00.3 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02) 00:02.0 VGA compatible controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02) 00:02.1 Display controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02) .... $ dmesg ... glxgears[13168]: segfault at 1300 ip b7b0c384 sp bfc79930 error 4 in libdricore.so[b7a33000+1fe000] Please attach Xorg.0.log. It will be good if you could try xf86-video-intel 2.8.x and kernel 2.6.30/31. Mesa 7.4 at this point is really old. Could you update to Mesa 7.5 or the 7.6 development branch and retest? (In reply to comment #0) > Running as normal user, glxgears segfaults. Running as root, it doesn't crash > but the graphical output is garbage (I can just about see the gears rotating, > but there are a lot of horizontal lines obscuring my view). This looks like incorrect permissions. The user you are running as does not have permission to access /dev/dri/card0. Ensure you have added your user to the video group (http://wiki.archlinux.org/index.php/Intel_Graphics#Configuration): sudo gpasswd -a myusername video This is fixed in the latest version. |
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I'm not sure if this is the right place to be reporting this. Running as normal user, glxgears segfaults. Running as root, it doesn't crash but the graphical output is garbage (I can just about see the gears rotating, but there are a lot of horizontal lines obscuring my view). I have checked permissions on the output of "ldd `which glxgears`" but that all seems fine (ie read access for everyone). I have the following ArchLinux packages installed, though I'm not sure how that relates to the actual software versions. mesa-7.4.2-1 xorg-server-1.6.1.901-1 libgl-7.4.2-2 Some debugger output ==== Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0xb7cfa6d0 (LWP 13099)] 0xb7b40384 in vbo_VertexAttrib4fvARB (index=1, v=0x1300) at vbo/vbo_attrib_tmp.h:354 354 ATTR4FV(VBO_ATTRIB_GENERIC0 + index, v); (gdb) bt #0 0xb7b40384 in vbo_VertexAttrib4fvARB (index=1, v=0x1300) at vbo/vbo_attrib_tmp.h:354 #1 0xb7b32da6 in neutral_VertexAttrib4fvARB (index=1, v=0x1300) at main/vtxfmt_tmp.h:453 #2 0x0804a40d in main (argc=1, argv=0xbfdaf5d4) at glxgears.c:404 (gdb) list 349 { 350 GET_CURRENT_CONTEXT( ctx ); 351 if (index == 0) 352 ATTR4FV(0, v); 353 else if (index < MAX_VERTEX_ATTRIBS) 354 ATTR4FV(VBO_ATTRIB_GENERIC0 + index, v); 355 else 356 ERROR(); 357 } 358 (gdb) print v $1 = (const GLfloat *) 0x1300 (gdb) print *v Cannot access memory at address 0x1300 The value of v seems fairly un-pointer-like! xorg.conf - I am using uxa here. With exa, X is rendered unusable. === Section "Device" Identifier "Builtin Default intel Device 0" Driver "intel" Option "AccelMethod" "uxa" EndSection Section "Screen" Identifier "Builtin Default intel Screen 0" Device "Builtin Default intel Device 0" EndSection Section "ServerLayout" Identifier "Builtin Default Layout" Screen "Builtin Default intel Screen 0" EndSection