Comment 58 for bug 159241

This bug persists in Hardy Heron on my Acer 5051 AWXMi laptop.
A closely related issue is the Bug #174231 launched by me. I found that this bug turned out to be a very close in nature to Bug #116734.

I am adding my latest comment for Bug #116734 below for convenience

"
I have checked with Hardy Heron [and Zenwalk with kernel 2.6.25]. I notice
these messages in addition to the PCI messages

PCI: Bridge: 0000:00:01.0
  IO window: 9000-9fff
  MEM window: b0100000-b01fffff
  PREFETCH window: c0000000-cfffffff
PCI: Bridge: 0000:00:04.0
  IO window: disabled.
  MEM window: disabled.
  PREFETCH window: disabled.
PCI: Bridge: 0000:00:05.0
  IO window: disabled.
  MEM window: disabled.
  PREFETCH window: disabled.
PCI: Bridge: 0000:00:06.0
  IO window: disabled.
  MEM window: disabled.
  PREFETCH window: disabled.
PCI: Bridge: 0000:00:07.0
  IO window: disabled.
  MEM window: disabled.
  PREFETCH window: disabled.

Sadly, on an ACER 5051AWXMi [my Laptop :-( ], these correspond to the PCI
Bridges for video.

00:00.0 Host bridge: ATI Technologies Inc RS480 Host Bridge (rev 10)
00:01.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:04.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:05.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:06.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge
00:07.0 PCI bridge: ATI Technologies Inc RS480 PCI Bridge

checking dmesg reveals:

ACPI: PCI Interrupt 0000:01:05.0[A] -> GSI 17 (level, low) -> IRQ 21
[fglrx] GART Table is not in FRAME_BUFFER range

glxgears will report a score around 1700fps but enabling compositing will
drag the system. I believe that the root cause of this issue also causes the
laptop to underperform when running 3D applications.

I do not know if this is relevant, but I cannot seem to get my display to
work in 32bit depth , though 24 seems just fine. Could this be the result of
the same issue?
"