quoted - "Is there anybody running Debian testing/unstable who can no longer get this to work?"
I'm having the same or similar problem with Lucid on my hd4850 - Since around the time the interrupt patches made it into the kernel tree. The current 2.6.32-9.13 kernel from Ubuntu works fine with KMS enabled, it looks to have drm upto the .32 release plus a few backported patches. The latest Ubuntu kernels from the mainline along with a custom compiled DRM-Radeon-Testing applied to Linus' git and Ubuntus 32-9.13 git source have all failed the same way. The remainder of the stack is the lastest (tried both Edgers-PPA and git compiles) and does not appear to be the problem.
I've been busy with other things so I haven't been trying to chase it down lately. When radeon modprobes on the newer kernels the screen immediately blanks (as though the HMDI output is disabled). This occurs with both UMS or KMS. SSHing in, dmesg shows the driver probed and loaded the firmwares with out error and reports that it's switching to a massive console mode (? 267x67). And Xorg.0.log looks like everything is going fine (detected modes look good,etc) and it selects the usual 1920x1080 mode. But the log just stops after that, haven't seen any errors reported aside from the failure to actually produce output.
Like I said the current 32-9.13 kernel along with the latest libdrm, mesa, DDX works great. So I've just been using that and checking every couple of days to see if the kernel (X server) issue is resolved. If rc2 is out now, I should be able to try it and collect some logs this w/e.
I'm having the same or similar problem with Lucid on my hd4850 - Since around the time the interrupt patches made it into the kernel tree. The current 2.6.32-9.13 kernel from Ubuntu works fine with KMS enabled, it looks to have drm upto the .32 release plus a few backported patches. The latest Ubuntu kernels from the mainline along with a custom compiled DRM-Radeon-Testing applied to Linus' git and Ubuntus 32-9.13 git source have all failed the same way. The remainder of the stack is the lastest (tried both Edgers-PPA and git compiles) and does not appear to be the problem.
I've been busy with other things so I haven't been trying to chase it down lately. When radeon modprobes on the newer kernels the screen immediately blanks (as though the HMDI output is disabled). This occurs with both UMS or KMS. SSHing in, dmesg shows the driver probed and loaded the firmwares with out error and reports that it's switching to a massive console mode (? 267x67). And Xorg.0.log looks like everything is going fine (detected modes look good,etc) and it selects the usual 1920x1080 mode. But the log just stops after that, haven't seen any errors reported aside from the failure to actually produce output.
Like I said the current 32-9.13 kernel along with the latest libdrm, mesa, DDX works great. So I've just been using that and checking every couple of days to see if the kernel (X server) issue is resolved. If rc2 is out now, I should be able to try it and collect some logs this w/e.
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