[Bug 9957] New: X hangs at startup with Radeon X800 GTO (PCIe) with DRI

[bugzilla-daemon at annarchy.freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=9957

           Summary: X hangs at startup with Radeon X800 GTO (PCIe) with DRI
           Product: xorg
           Version: 7.1
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/Radeon
        AssignedTo: xorg-driver-ati at lists.x.org
        ReportedBy: nphilipp at redhat.com


When starting X (with DRI enabled), the screen just goes blank and the keyboard
is dead. Xorg consumes 100% CPU and can't be killed... well it doesn't really
go away, just the terminal shows it is killed, but there is an Xorg process
with the same pid hogging the CPU. When run trough strace (before killing), it
just endlessly does:

ioctl(9, 0x6444, 0)                     = -1 EBUSY (Device or resource busy)

FD #9 is /dev/dri/card0 (as is FD #10 FWIW). My X version is:

root at wombat:~> Xorg -version

X Window System Version 7.1.1
Release Date: 12 May 2006
X Protocol Version 11, Revision 0, Release 7.1.1
Build Operating System: Linux 2.6.9-34.ELsmp x86_64 Red Hat, Inc.
Current Operating System: Linux wombat 2.6.18-1.2869.fc6 #1 SMP Wed Dec 20
14:51:34 EST 2006 x86_64
Build Date: 29 January 2007
Build ID: xorg-x11-server 1.1.1-47.5.fc6 
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
Module Loader present
root at wombat:~> rpm -q xorg-x11-server-Xorg xorg-x11-drv-ati
xorg-x11-server-Xorg-1.1.1-47.5.fc6
xorg-x11-drv-ati-6.6.3-1.fc6

I found some oddities in the log file, namely that a) the driver was somehow
confused by the cards secondary bus ID, b) it didn't recognize the Radeon X800
GTO as such, but as an X850 PRO and c) somehow used only 128MB of the 256MB
card:

  (II) Primary Device is: PCI 07:00:0
  (--) Assigning device section with no busID to primary device
  (WW) RADEON: No matching Device section for instance (BusID PCI:7:0:1) found
  (--) Chipset ATI Radeon X850 PRO (R480) (PCIE) found
  (II) resource ranges after xf86ClaimFixedResources() call:

  [...]

  (II) RADEON(0): Page flipping disabled
  (II) RADEON(0): Will try to use DMA for Xv image transfers
  (II) RADEON(0): Generation 2 PCI interface, using max accessible memory
  (II) RADEON(0): Detected total video RAM=262144K, accessible=131072K (PCI
BAR=131072K)
  (--) RADEON(0): Mapped VideoRAM: 131072 kByte (256 bit DDR SDRAM)
  (II) RADEON(0): Color tiling enabled by default

The output of lspci -v also shows that only 128MB are mapped.

I could get X to work when I disabled DRI (I used "install radeon /bin/false"
in /etc/modprobe.conf to do that). I'll attach xorg.conf, Xorg.0.log, strace
output (shortened) shortly.


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