https://bugs.freedesktop.org/show_bug.cgi?id=28670
Summary: some 2D apps way too slow, fast with noaccel
(regression)
Product: xorg
Version: git
Platform: x86-64 (AMD64)
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Driver/Radeon
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Original bugreport: https://gna.org/bugs/?16122 (Summary: zooming in MyPaint is
horribly slow, same with fading effects in Firefox)
Disabling acceleration (noaccel) solves the problem.
Chipset: "ATI Radeon X300 (RV370) 5B60 (PCIE)"
Bug 26225 looks very similar to this.
The ati/radeon module version 1.7.7 does not have this problem. The problem
exists in version 6.12.192 (debian testing package) and in current git.
I have tried to "git bisect" this but failed to build the older versions. The
problem was introduced somewhere between the 1.7.7 tag and commit 6990f2ac647
(dated 2009-09-08).
I'm using kernel 2.6.32-5-amd64. Please let me know if you need more
information.
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