http://bugs.freedesktop.org/show_bug.cgi?id=23262
Summary: ATI Radeon Mobility KMS modeset=1 is slower than
modeset=0
Product: xorg
Version: 7.4
Platform: All
OS/Version: Linux (All)
Status: NEW
Severity: major
Priority: high
Component: Driver/Radeon
AssignedTo: [email protected]
ReportedBy: [email protected]
QAContact: [email protected]
Created an attachment (id=28531)
--> (http://bugs.freedesktop.org/attachment.cgi?id=28531)
results.html
Forwarding this bug report from Ubuntu reporter Jerry Lamos.
[Problem]
Performance regression when using the KMS -ati driver corresponding to version
1:6.12.99+git20090805.bd03977e along with kernel, mesa, and libdrm from the kms
ppa: https://edge.launchpad.net/~ubuntu-x-swat/+archive/kms.
[Original Report]
Performance is actually worse than -vesa on this system.
Measurements are from IBM Thinkpad T40 with ATI Radeon Mobility 7500. See
attached file for specific data.
Col 1 is measurements with xorg driver vesa.
Col 2 is nomodeset no KMS xorg ati driver 6.12.99+git.....
Col 3 is modeset=1 KMS xorg ati driver 6.12.99+git.....
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