| Summary: | KMS DDX driver crashes on non KMS kernel when modprobe radeon failed | ||||||||||
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| Product: | xorg | Reporter: | Thierry Vignaud <thierry.vignaud> | ||||||||
| Component: | Driver/Radeon | Assignee: | xf86-video-ati maintainers <xorg-driver-ati> | ||||||||
| Status: | RESOLVED FIXED | QA Contact: | Xorg Project Team <xorg-team> | ||||||||
| Severity: | major | ||||||||||
| Priority: | medium | ||||||||||
| Version: | 7.4 (2008.09) | ||||||||||
| Hardware: | x86-64 (AMD64) | ||||||||||
| OS: | Linux (All) | ||||||||||
| Whiteboard: | |||||||||||
| i915 platform: | i915 features: | ||||||||||
| Bug Depends on: | 24158 | ||||||||||
| Bug Blocks: | |||||||||||
| Attachments: |
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Created attachment 28546 [details]
X log showing success on a KMS kernel
Created attachment 28547 [details] [review] interesting difference bits between KMS an non KMS w/o the radeon kernel module R4xx and older cards can use the 3D engine for EXA via MMIO, so it should work fine. Can you get a backtrace of the crash with gdb? http://wiki.x.org/wiki/Development/Documentation/ServerDebugging Looks like it got fixed along bug #24158 |
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Created attachment 28545 [details] X log showing crash on a non KMS kernel Using ati driver 6.2.99 (aka git shapshot as of 92baeafde8f0c1eed2b6769e96f8093e3d6d7478 (today)) works fine on a KMS aware kernel. However, if booting on a non KMS kernel where it failed to load the radeon kernel module, it crashes trying to set up the 3D engine despte advertising disabling DRI. Here /etc/modprobe.options contains "options radeon modeset=1" and thus radeon kernel module failed to load because of the unknown option with a non KMS kernel. logs shows a crash in RADEONInit3DEngine() despite DRI being disabled. See attache traces. Card is radeon 9600 (RV350). Xserver is 1.6.2. Mesa is 7.5. ATI driver is 6.2.99 Solution: do not try to init 3D engine at all if DRI is disabled for whatever reason it is.