[Bugme-new] [Bug 12372] New: kernel-2.6.28 prevents X.org from starting on SiS 651 (REGRESSION)

bugme-daemon at bugzilla.kernel.org bugme-daemon at bugzilla.kernel.org
Tue Jan 6 06:58:53 PST 2009


http://bugzilla.kernel.org/show_bug.cgi?id=12372

           Summary: kernel-2.6.28 prevents X.org from starting on SiS 651
                    (REGRESSION)
           Product: Platform Specific/Hardware
           Version: 2.5
     KernelVersion: 2.6.28
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: i386
        AssignedTo: platform_i386 at kernel-bugs.osdl.org
        ReportedBy: tvignaud at mandriva.com


Latest working kernel version: 2.6.27
Earliest failing kernel version: 2.6.28-rc8
          (I did not tested earlier RCs)
Distribution: Mandriva Linux
Hardware Environment: P4 with an SiS motherboard (video card is a SiS 651)
Software Environment: X11
Problem Description:
kernel-2.6.28 prevents X.org from starting on SiS 651 with sis driver
(REGRESSION). X11 failed to load with:

Fatal server error:
xf86MapVidMem: Could not mmap framebuffer (0x00000000,0x2000) (Invalid
argument)

Tested with both:
- xorg-7.3 / xserver-1.5
- xorg-7.4 / xserver-1.6 (really 1.5.99.3)

All X11 variants work smoothly with 2.6.27 and all failed with 2.6.28.


Steps to reproduce:
- boot with 2.6.27: X loads smoothly
- boot with 2.6.28: X failed to load


Looks similar to bug #10828


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