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I have an HP Pavillion dm4 with intel core i5.

I'm trying to get my second screen going but whenever I plug it in, nothing happens. The display settings don't recognize the second output either.

I looked at this answer but it's for Atom chipsets...

Please help.

$ lsmod | grep video
uvcvideo               72627  0 
videodev               98259  1 uvcvideo
v4l2_compat_ioctl32    17128  1 videodev
video                  19651  1 i915
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Robson CE [AMD Radeon HD 6300 Series]
$ lspci | grep HDMI
01:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Cedar HDMI Audio [Radeon HD 5400/6300 Series]
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1 Answer 1

you have to activate or on it. so that it can have the signal. I mean open your terminal and type as

xrandr --output VGA1 --right-of HDMI1 --auto

If its worked for you, add it to autostart. so that everytime system on . your Dual screen will be on.


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This didn't work here's the output warning: output VGA1 not found; ignoring –  doodle-snoopy Aug 6 '13 at 13:31
try with VGA0 , –  Raja Aug 6 '13 at 13:33
same result. added some more information in the edits above. –  doodle-snoopy Aug 6 '13 at 13:40
ok look at this thread –  Raja Aug 6 '13 at 13:47

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