The only thing I can think of is that the TV is returning invalid or nonstandard signalling/data over the HDMI cable, given that your machine can drive other HDMI displays. Do you have any other HDMI sources you can test the TV with? Is there anything relevant-looking in dmesg or Xorg.log when you plug in the TV?
HDMI signal issues Xubuntu 14.10
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01 Staff (not verified)
01 Staff (not verified)
Mar 30, 2015 - 05:56am
Hello,
I'm trying to have triple display on my Xubuntu 14.10. My MB has 3 connections: vga, dvi, hdmi. Connecting two Dell monitors on VGA and DVI works without problems. But when I try to connect TV on HDMI starts some interesting stuff. When booted Xubuntu, TV says "No signal" (tried 3 different HDMI cables, same result), but when I connect any monitor to HDMI - all three displays works as expected, with same 3 HDMI cables I tried with TV. When booted to Windows 8.1 - TV (HDMI) and other 2 displays (VGA and DVI) works also as expected. Looks like somehow Xubuntu does not want to work with particular TV. Xrandr says, that HDMI is not connected.Is there anything I can do, to enable TV on HDMI with Intel card and 1.0.8 drivers?
Some tech. info:
mazhasai@Mazhasai:~$ lspci | grep VGA00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
mazhasai@Mazhasai:~$ xrandrScreen 0: minimum 8 x 8, current 3840 x 1080, maximum 32767 x 32767
HDMI1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 475mm x 267mm
1920x1080 60.0*+
1280x1024 75.0 60.0
1152x864 75.0
1024x768 75.1 60.0
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1
HDMI2 disconnected (normal left inverted right x axis y axis)
VGA1 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 475mm x 267mm
1920x1080 60.0*+
1280x1024 75.0 60.0
1152x864 75.0
1024x768 75.1 60.0
800x600 75.0 60.3
640x480 75.0 60.0
720x400 70.1