| Summary: | ATI Radeon Mobility KMS modeset=1 is slower than modeset=0 | ||||||||||||||||
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| Product: | xorg | Reporter: | Bryce Harrington <bryce> | ||||||||||||||
| Component: | Driver/Radeon | Assignee: | xf86-video-ati maintainers <xorg-driver-ati> | ||||||||||||||
| Status: | RESOLVED INVALID | QA Contact: | Xorg Project Team <xorg-team> | ||||||||||||||
| Severity: | major | ||||||||||||||||
| Priority: | high | CC: | christopher.m.penalver, jerrylamos | ||||||||||||||
| Version: | 7.4 (2008.09) | ||||||||||||||||
| Hardware: | All | ||||||||||||||||
| OS: | Linux (All) | ||||||||||||||||
| Whiteboard: | |||||||||||||||||
| i915 platform: | i915 features: | ||||||||||||||||
| Attachments: |
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Description
Bryce Harrington
2009-08-11 22:08:41 UTC
Created attachment 28532 [details]
Xorg.0.log.mode1
I understand this is a known issue, so haven't forwarded other performance bugs, however this one has some crunchy data to go with it, so am forwarding for tracking purposes.
Created attachment 28533 [details]
dmesg
Created attachment 28534 [details]
lspci-vvnn
The log file shows that the X driver lacks KMS support, so it fails to enable the DRI (and uses the hardware behind KMS' back...). If there is a problem when the X driver actually uses KMS (and higher AGP transfer rates don't help), please reopen with the corresponding log file. Created attachment 28574 [details] [review] Xorg.0.log from modeset=1 Results from GtkPerf on IBM Thinkpad T40 1.5 gHz P4 ati radeon mobility 7500 All times are in seconds with higher number being slower. GtkPerf0.40Aug1117:35:092009 karmic.A3.radeon.Mobility7500.1:6.12.99+git20090805.bd03977e-0ubuntu2 [CODE] jaunty A3_mode0 Modeset=1 GtkEntrytime:____________ 0.13 0.07 0.10 GtkComboBoxtime:_______ 1.78 2.33 8.87 GtkComboBoxEntrytime:___ 1.08 1.56 4.86 GtkSpinButtontime:_______ 0.32 0.37 2.96 GtkProgressBartime:______ 0.86 0.36 5.12 GtkToggleButtontime:_____ 0.35 0.46 3.05 GtkCheckButtontime:______ 0.31 0.26 0.97 GtkRadioButtontime:______ 0.60 0.40 1.31 GtkTextViewAddtexttime:__ 1.29 1.64 1.75 GtkTextViewScrolltime:____ 0.51 0.49 1.60 GtkDrawingAreaLinestime:__ 1.74 1.01 2.67 GtkDrawingAreaCirclestime: 1.34 1.31 2.55 GtkDrawingAreaTexttime:__ 1.78 8.00 1.89 GtkDrawingAreaPixbufstime: 0.44 0.77 3.01 Total time: 12.54 19.04 40.72 [/CODE] Created attachment 28575 [details]
dmesg from the T40
Ctrl-Alt-F1 switches quickly to the typical modeset=1 small font 48 line screen on this 1024x768 lcd, and lots of characters per line? Then pressing Ctr-Alt-F7 switches quickly right back to this graphics screen. There doesn't appear to be any reset. It's almost like flipping windows. Yes there are some complaints in syslog but isn't that always the case with linux. Jerry [Jerry has attached the log files from his more recent tests with kms, showing the regression.] Jerry Lamos, Ubuntu Karmic reached EOL on April 30, 2011. For more on this, please see https://wiki.ubuntu.com/Releases . If this is reproducible on a supported release, it will help immensely if you filed a new report with Ubuntu by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information running the following from a terminal: ubuntu-bug xorg Also, please feel free to subscribe me to it. For more on why this is helpful, please see https://wiki.ubuntu.com/ReportingBugs. |
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