![]() ![]() )īug #331522 is tracking one remaining screen blanking bug, so I would encourage you to watch that one. Otherwise we end up with one bug report that is a mishmash of different discrete bugs and it becomes ambiguous what their status is this greatly increases the difficulty to developers working on the bug, which isn't in our interest. I know that sounds confusing and perhaps frustrating, but this workflow is necessary to make solving these problems feasible. We maintain bug reports on a per-bug basis rather than a per-symptom basis, so since the particular bug investigated for this bug report was solved, this report should be closed, even if people are still seeing the same symptom (due to a different issue). The particular bug investigated upstream for this report was fixed by the referenced patch. The title of this bug is unfortunately generic, however it appears there are several different underlying bugs in the system which produce similar symptoms (random screen blanks). + 110_quirk_agpmode_r420_sis.patch: AGPMode quirk. + 109_quirk_agpmode_m7_intel.patch: AGPMode quirk. + 108_quirk_agpmode_m6_ali.patch: AGPMode quirk. + 107_check_unsupported_composit_ops.patch * sed -i s/DRI2BufferPtr/DRI2Buffer2Ptr/ src/radeon_dri2.c * 199_add_git_version_to_log.diff: Log git commit id in RadeonPreInit() + 107_check_ unsupported_ composit_ ops.patch * Restore patch system and quilt to build-depends * sed -i s/DRI2BufferPtr /DRI2Buffer2Ptr / src/radeon_dri2.c diff: Log git commit id in RadeonPreInit() + Fix smeared/tearing of display on reboot + Fix screen corruption issues when switching windows ![]() + Fix faulty wine screen updates with EXA Compositing + Fix intermittent short screen blanking behavior + Fix freeze on opengl games (bzflag, alienarena) (when KMS on) + Adds DRI2 / redirected direct rendering This bug was fixed in the package xserver- xorg-video- ati - 1:6.12. I don't have access to any other radeon cards so I can't say if this problem or the solution affects them - I suspect from the looking at the commit logs that the fractional fb div doesn't work on some cards, but it seems to be required for the RS690.Īny advice on how/where to properly incorporate these changes into the driver would be appreciated. I have added these changes unconditionally to the driver (it's basically a quick hack to make it work and certainly could be much tidier), but can post a patch if required. I have managed to resolve the issue by making 2 changes to radeon_crtc.c, one to enable the use of the fractional fb divider and secondly by changing the selection criteria for PLL values to choose the closest frequency that is less than the target frequency, rather than just the closest. The problem seems dependent on the model of screen, some seem more sensitive to variations in pixel clock than others. I have had some problems with flickering using this chip and high resolution displays over DVI/HDMI. Using the proprietary fglrx driver, I don't see those blanks, which should rule out a hardware problem. I only have a single 2GB SO-DIMM DDR2-800 RAM module on my mainboard, which is used for the shared video RAM. I'm using a 1680x1050 display connected digitally via my board's HDMI output. Snipset from 'apt-cache policy xserver- xorg-video- radeon' : Unfortunately setting option "DisplayPriority" to "HIGH" or "BIOS" doesn't help.Ġ1:05.0 VGA compatible controller: ATI Technologies Inc RS690M This looks like the 'display buffer underflow' problem described in 'man radeon'. If I enter a 3D game, such as ppracer, these blanks occur much more frequently, many times per minute. On an idle system these blanks are rather seldom, mabye once per 5 minutes. ![]() If I add 'Option "PanelSize" "1680x1050"' to my nf and restart, the driver uses the display's correct native resolution.Īt the higher resolution, the screen now randomly blanks out for a second. By default the driver doesn't detect my display's size and runs at 1024x768. I'm using Ubuntu 8.10 with the open source Radeon driver (used by default after installation). Binary package hint: xserver- xorg-video- radeon
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