Radeon RV370 w/ acceleration enabled exhibits problem with resolutions above 1440x900
Submitted by Jean-Philippe Gariépy
Assigned to Default DRI bug account
Description
Observed under Using Fedora 23 package xorg-x11-drv-ati-7.6.1-3.20160215gitd41fccc.fc23.i686 but problem is present in many other Linux distribs.
xorg.conf
Section "Device" Identifier "device" Driver "radeon" Option "Accel" "true" EndSection
lspci -v
...
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV370 [Radeon X300] (prog-if 00 [VGA controller])
Subsystem: Advanced Micro Devices, Inc. [AMD/ATI] Device 0602
Flags: bus master, fast devsel, latency 0, IRQ 30
Memory at ec000000 (64-bit, prefetchable) [size=32M]
Memory at efde0000 (64-bit, non-prefetchable) [size=64K]
I/O ports at dc00 [size=256]
Expansion ROM at efe00000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: radeon
Kernel modules: radeon
...
Was working ok with old fedora XOrg version (under Fedora 12, it was OK).
I'd like to provide more useful info as whether the bug is in the DRI layer or XOrg driver but I don't know where to start.
I've tried modifying every EXA options without success. The only stable configuration is with Accel = false.