Arch Linux

hillbicks

Member

Registered: 2014-03-14

Posts: 14

[solved] HDMI output scrambled when Beamer is off while booting KODI

Hey guys,

I just got a new AVR (Pioneer VSX 924) that is connected to my HTPC, running Kodi on one end and outputting to my Epson TW7200 on the other end. Now, if I start the HTPC with KODI while the Beamer is still off, this is the result I get:

At first I thought this might be the phantom output issue with nouveau the arch wiki mentions, so I disabled VGA and DVI outputs, still no luck. Then I ran xrandr which shows the following:

Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
HDMI-1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 1600mm x 900mm
   1920x1080     60.00 +  50.00    59.94    30.00    24.00    29.97    23.98  
   1920x1080i    60.00*+  50.00    59.94  
   1280x720      60.00    50.00    59.94  
   1440x576      50.00  
   1440x480      60.00    59.94  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       60.00    59.94  

So, apparently HDMI is correctly identified as the connected display. Now, if I run

xrandr --output HDMI-1 --mode 1920x1080

the output is displayed correctly. So, as a workaround I wanted to run this command as soon as KODI is started, but that doesn't work either when the beamer is still off while running it. I have to turn the Beamer on and switch the resolution again for the output to be displayed correctly.

Anyone with an idea what could cause this issue?

EDIT: Solved it by removing nouveau and installing the right nvidia package according to the arch wiki.

Last edited by hillbicks (2015-01-21 21:19:53)

xamindar

Member

Registered: 2010-08-07

Posts: 52

Re: [solved] HDMI output scrambled when Beamer is off while booting KODI

I have had to set Xorg to force the edid of my receiver so it works even when it is off.

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    Option      "ConnectedMonitor"      "DFP-1"
    Option      "UseDisplayDevice"      "DFP-1"
    Option      "CustomEDID"            "DFP-1:/etc/X11/onkyo-edid.bin"
EndSection

Yours will obviously be a little different, but having this makes everything work for me whether the TV/AMP is off or on when booting up.

http://kodi.wiki/view/Creating_and_usin … _xorg.conf

hillbicks

Member

Registered: 2014-03-14

Posts: 14

Re: [solved] HDMI output scrambled when Beamer is off while booting KODI

So, as I was about to try your suggestion I encountered a lot of unrelated problems and so after a while I came to the conclusion that I need the nvidia package instead of nouveau, but don't ask me what, I honestly can't remember. Anyway, after removing nouveau and installing the nvidia package everything is working as I want to. After starting up the HTPC with KODI, the beamer will turn on through CEC and the output is displayed correctly. No need for the EDID workaroung, but thanks anyway. It worked in the end, that's what counts, right?