On Sat, Jun 15, 2013 at 11:37:46AM +0200, Thomas Meyer wrote: > Am Freitag, den 14.06.2013, 23:26 +0200 schrieb Thierry Reding: > > On Fri, Jun 14, 2013 at 10:59:00PM +0200, Thomas Meyer wrote: > > > Am 14.06.2013 um 22:37 schrieb Thierry Reding <thierry.reding@xxxxxxxxx>: > > [...] > > > > I think I've seen a similar issue > > > > when that's not loaded, in which case DRM will turn off all outputs > > > > because there's nothing to display. Alternatively you could try to run > > > > an X server using the xf86-video-opentegra or xf86-video-modesetting > > > > drivers. That should definitely get you output on HDMI. > > > > > > I did login blindly on tty2 and started xfce using the open tegra driver, > > > but still no hdmi output. I can send you the Xorg log file if you want > > > to. > > > > Yes, Xorg output would be good. Additionally, dmesg output might help. > > Don't forget to pass drm.debug=0xf on the kernel command-line. > > > > > Xfce seems to run correctly, as far as I can see all necessary processes > > > are running. The monitor I connect to the hdmi is an dvi monitor using > > > an dvi to hdmi adapter, so no sound is connected. But that shouldn't be > > > a problem. > > btw. switching the mode with > $ xrandr -d :0 --output HDMI-0 --mode 1680x1050 > > makes the external monitor output the display correctly... > > also switching to the highest possible resolution works after the first > mode switch: > $ xrandr -d :0 --output HDMI-0 --mode 1920x1080 So perhaps the default configuration chosen at startup isn't one that tegra-drm can properly deal with. Can you provide the output of $ xrandr --query run immediately after booting (that is with the default configuration before you make it work by setting a 1680x1050 mode). Thierry
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