Arch Linux

HarveyK

Member

Registered: 2015-10-05

Posts: 37

External VGA display can only be connected once

On my HP Probook 430 G1 (Intel i5-4200U), an external VGA display only works for the first time being connected.

On first connection It is seen by xrandr as

DP1 connected 1024x768+1366+0 (normal left inverted right x axis y axis) 880mm x 500mm

After dis- and reconnection it always stays disconnected

DP1 disconnected (normal left inverted right x axis y axis)

and never comes up again until I reboot. "xrandr --output DP1 --auto" does not help.

Full journalctl on (re)connections is here, full xrandr output here.

I'm using Plasma, but the problem is not kscreen related - it occurs on XFCE4 as well.

Harware is

00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 09)

Kernel is

Linux haspl 4.15.11-1-ARCH #1 SMP PREEMPT Mon Mar 19 18:21:03 UTC 2018 x86_64 GNU/Linux

TIA,
   Heinz

YanDoroshenko

Member

Registered: 2016-09-02

Posts: 12

Re: External VGA display can only be connected once

Same situation here. Arandr says that output is active and everything should be fine, but the monitor does not get any input.

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,255

Re: External VGA display can only be connected once

The second attempt has an ACPI error, have you tried updating your UEFI firmware/BIOS?

@YanDoroshenko Then you don't have the same issue,  as shown by the outputs provided the display is missing on the second attempt in xrandr as well, please create your own thread providing the outputs from this thread on your own system

HarveyK

Member

Registered: 2015-10-05

Posts: 37

Re: External VGA display can only be connected once

The second attempt has an ACPI error, have you tried updating your UEFI firmware/BIOS?

Thanks, but "ACPI action undefined: PNP0C0A:00" pops up randomly and is not related to the VGA connection.