No display in external vga monitor(SOLVED)

clemency · 2017-07-23 07:29:55

Hi there, I have attempted installing bunseblabs in my Lenovo g50-30 laptop with broken screen connected to external vga Dell monitor. Each time I want to boot from flashed USB I don't see any display on the monitor but I can boot ubuntu installation successfully. Initially, I thought the iso file was not flashed correctly that I have to repeat the process severally but when I connected the laptop to my TV via HDMI port; bam!, Here is the grub menu.

So I successfully installed bunsenlab which works great. But when I connect the external vga monitor, still no display(I use this monitor in the office:Till I can fix the laptop screen). I don't know what is wrong. I'd appreciate any help from you guys. Thanks. Sorry if my English is bad.

Note: Never experienced this issue since many years of distro-hopping.

Last edited by clemency (2017-07-28 01:02:47)

devnull · 2017-07-23 09:03:58

Just to get this straight:

* you have a laptop with broken screen
* when you boot ubuntu from USB the VGA monitor works automatically
* when you boot bunsenlabs from usb? It works?
* how did you install bunsenlabs (and know it works) if the vga does not work? From the HDMI?

If I correctly understood it may just be that xrandr should be told to automatically turn on the VGA connection at the start of the x session.

You could just add this line (or something like this) to you .config/openbox/autostart

xrandr --output VGA1 --auto &

If it doesn't work it may be that your system does not recognise the VGA as VGA1. To get the name, use xrandr -q

Hope this helps

clemency · 2017-07-23 11:11:41

Thanks devnull for prompt reply. To your question:
*Laptop screen is broken(yes)
*Boot Ubuntu from USB the vga monitor works(yes)
*Boot bunsenlab from USB vga monitor works (no)
*Installed bunsenlab while connected through HDMI(yes)

Will try your suggestion and post the outcome soon. Thanks again

Head_on_a_Stick · 2017-07-23 11:18:44

What is your graphics hardware?

lspci -knn | grep -iA2 'vga\|3d'

clemency · 2017-07-24 09:11:14

devnull wrote:

Just to get this straight:
* you have a laptop with broken screen
* when you boot ubuntu from USB the VGA monitor works automatically
* when you boot bunsenlabs from usb? It works?
* how did you install bunsenlabs (and know it works) if the vga does not work? From the HDMI?
If I correctly understood it may just be that xrandr should be told to automatically turn on the VGA connection at the start of the x session.
You could just add this line (or something like this) to you .config/openbox/autostart
xrandr --output VGA1 --auto &
If it doesn't work it may be that your system does not recognise the VGA as VGA1. To get the name, use xrandr -q
Hope this helps

It works! Thanks, you are wonderful.

clemency · 2017-07-24 09:23:16

Head_on_a_Stick wrote:

What is your graphics hardware?
lspci -knn | grep -iA2 'vga\|3d'

Output of of the above command(sending from Android phone)
"00:02.0 VGA compatible controller [0300]: Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics &Display [8086:0f31] (rev 0e)
Subsystem: Lenovo Device [17aa:3905]
Kernel driver in use: i915"

clemency · 2017-07-24 09:41:06

Thanks again for your support

clemency · 2017-07-28 00:55:07

How to mark as solved? I cannot edit the title.,

Update: Did it,

Last edited by clemency (2017-07-28 01:03:58)

#1 2017-07-23 07:29:55

No display in external vga monitor(SOLVED)

#2 2017-07-23 09:03:58

Re: No display in external vga monitor(SOLVED)

#3 2017-07-23 11:11:41

Re: No display in external vga monitor(SOLVED)

#4 2017-07-23 11:18:44

Re: No display in external vga monitor(SOLVED)

#5 2017-07-24 09:11:14

Re: No display in external vga monitor(SOLVED)

#6 2017-07-24 09:23:16

Re: No display in external vga monitor(SOLVED)

#7 2017-07-24 09:41:06

Re: No display in external vga monitor(SOLVED)

#8 2017-07-28 00:55:07

Re: No display in external vga monitor(SOLVED)

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