On Tue, Apr 27, 2010 at 6:24 PM, GhePeU <ghepeu@xxxxxxxxxxx> wrote: > Il giorno mar, 27/04/2010 alle 18.11 -0400, Alex Deucher ha scritto: >> On Tue, Apr 27, 2010 at 5:30 PM, GhePeU <ghepeu@xxxxxxxxxxx> wrote: >> > Il giorno gio, 15/04/2010 alle 13.41 -0400, Alex Deucher ha scritto: >> >> >From 837feb147c531219c7315857a6f17e145af8f750 Mon Sep 17 00:00:00 2001 >> >> From: Alex Deucher <alexdeucher@xxxxxxxxx> >> >> Date: Thu, 15 Apr 2010 13:31:12 -0400 >> >> Subject: [PATCH] drm/radeon/kms: fix tv dac conflict resolver >> > >> > Hi, >> > >> > a few days ago I upgraded to the last 2.6.34 rc kernel and found that with >> > KMS both the console and X were using a 800x600 resolution instead of my LCD >> > display's native resolution of 1440x900 who was selected by default with >> > 2.6.33 and previous kernels. >> > >> > I tracked the problem to this patch, which causes the same issues also >> > when manually applied to 2.6.33: apparently the kms radeon driver >> > wrongly detects a TV connected to my card (I don't have one, only a LCD >> > display connected to the DVI port) and forces the TV default resolution >> > for all the outputs. >> >> You issue is not related to the patch. What the patch does is allow >> you to use the digital part of DVI plus TV at the same time. The >> analog part of the DVI port and the TV share the same DAC so they >> can't be used at the same time. Prior to the patch, both the TV and >> DVI were detected as attached, but the TV was always disabled since it >> was wrongly seen as conflicting with the DVI. >> >> Your issue is actually a matter of load detection for TV not always >> being reliable. I don't know what a proper fix would be. We could >> disable load detection for TV to avoid false positives, but that would >> prevent automatic detection of TV which does work in most cases. >> >> Alex >> > > With UMS however I don't have this problem, is the logic different? > > Shouldn't the driver behavior with KMS be the same, in this case? At > least there wouldn't be (apparent) regressions like the one I'm > experiencing. > UMS does not enable load detection on TV by default while KMS does, the difference being KMS provides both the console and X so you want to make sure you put something up on whatever monitors or tvs happen to be attached. I'm not sure what the best answer is here. Alex _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
