** Summary changed:
- EXA has severe performance impact on ATI R580 (X1900)
+ [R580] EXA has severe performance impact on ATI R580 (X1900)
** Description changed:
- Binary package hint: xserver-xorg-video-ati
-
Jaunty upgrade 1:6.9.0.91-1ubuntu3 had severe performance impact on my
"ati" driver install. The desktop was unusable as even simple operations
made CPU peak at 100%.
Option AccelMethod "XAA" brought performance back to where it was before
(not so bad).
besides from that option i don't have any option in xorg.conf device
section.
Let me know if you need more information.
- Card details from lspci:
-
+ [lspci]
05:00.0 VGA compatible controller: ATI Technologies Inc R580 [Radeon X1900]
Subsystem: ATI Technologies Inc Device 0b12
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at e0000000 (64-bit, prefetchable) [size=256M]
Region 2: Memory at fd6f0000 (64-bit, non-prefetchable) [size=64K]
Region 4: I/O ports at 5c00 [size=256]
[virtual] Expansion ROM at fd600000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel modules: fglrx
05:00.1 Display controller: ATI Technologies Inc Device 7264
Subsystem: ATI Technologies Inc Device 0b13
Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Region 0: Memory at fd6e0000 (64-bit, non-prefetchable) [disabled]
[size=64K]
Capabilities: <access denied>
--
[R580] EXA has severe performance impact on ATI R580 (X1900)
https://bugs.launchpad.net/bugs/315889
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