[Bug 23270] New: KMS DDX driver crashes on non KMS kernel when modprobe radeon failed

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Aug 12 06:45:28 PDT 2009


           Summary: KMS DDX driver crashes on non KMS kernel when modprobe
                    radeon failed
           Product: xorg
           Version: 7.4
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: tvignaud at mandriva.com
         QAContact: xorg-team at lists.x.org

Created an attachment (id=28545)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=28545)
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
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

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.

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