[Bug 10277] New: X regularly freezes

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Ubuntu (kubuntu) | UNKNOWN

           Summary: X regularly freezes
           Product: Ubuntu
           Version: unspecified
          Platform: i386
        OS/Version: Linux
            Status: NEW
          Keywords: kubuntu
          Severity: critical
          Priority: P2
         Component: UNKNOWN
        AssignedTo: debzilla at ubuntu.com
        ReportedBy: postmast3r at gmail.com
         QAContact: kubuntu-bugs at lists.ubuntu.com


A friend of mine has an issue with his fresh Kubuntu 5.04 install.  Every 10 to
45 minutes or so, X freezes and he has to CTRL ALT backspace to kill X to be
able to use it again.

Each time X locks up, this message shows up in /var/log/kern.log and
/var/log/messages:
Apr 29 01:32:44 localhost kernel: __iounmap: bad address d4384000

This message shows up in /var/log/Xorg.0.log.old around the same time when it
happens:
(II) RADEON(0): [drm] removed 1 reserved context for kernel
(II) RADEON(0): [drm] unmapping 8192 bytes of SAREA 0xd4205000 at 0xb5d8f000

$ uname -a
Linux linux2 2.6.10-5-386 #1 Tue Apr 5 12:12:40 UTC 2005 i686 GNU/Linux

$ cat /proc/cmdline
root=/dev/hda1 ro quiet splash acpi=off noapic noinotify apm=off

His video card is an ATI Radeon Rage 6.
X reports it is this in its logs:
(--) PCI:*(0:9:0) ATI Technologies Inc Radeon R100 QD [Radeon 7200] rev 0, Mem @
0xd0000000/27, 0xe0000000/19, I/O @ 0xdc00/8
...
(II) ATI:  Candidate "Device" section "ATI Technologies, Inc. Radeon 7200 (R100
QD)".
...
(II) RADEON(0): initializing int10
(II) RADEON(0): Primary V_BIOS segment is: 0xc000
(--) RADEON(0): Chipset: "ATI Radeon QD (AGP)" (ChipID = 0x5144)
(--) RADEON(0): Linear framebuffer at 0xd0000000
(--) RADEON(0): VideoRAM: 32768 kByte (128 bit SDR SDRAM)
(II) RADEON(0): PCI card detected

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