Hello everyone.
Until yesterday i was able to connect my laptop to an HDMI cable and it worked normally. But after updating the system today, the laptop can’t recognize the external monitor anymore.
I have an old laptop that still works, so the problem is the new one.
My configuration is:
Lenovo Ideapad C340.
KDE Plasma 5.17.5
Intel Core i5-8265U
8GB RAM
Integrated Intel UHD Graphics 620
Any ideas?
Did you restart after upgrading?
Check the display settings and is it maybe adding the hdmi attached monitor as disabled?
What is the command xrandr showing you in a terminal? Is it showing the HDMI output as connected?
Did you restart after upgrading?
Yes.
Check the display settings and is it maybe adding the hdmi attached monitor as disabled?
Display settings don’t show any HDMI options…
What is the command xrandr showing you in a terminal? Is it showing the HDMI output as connected?
Screen 0: minimum 320 x 200, current 1366 x 768, maximum 1638
4 x 16384
eDP-1 connected primary 1366x768+0+0 (normal left inverted ri
ght x axis y axis) 309mm x 173mm
1366x768 59.98*+
1360x768 59.80 59.96
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
800x512 60.17
700x525 59.98
800x450 59.95 59.82
640x512 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 60.06
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
DP-1 disconnected (normal left inverted right x axis y axis)
That’s all, there’s no HDMI information here.
In Audio and Video settings, says "The shared library was not found. Possible reasons:
List item an error during the last update, leaving an orphan control module.
List item do you have obsolete third party modules."
That is bad. So it is not even picking up the HDMI anymore.
Did the upgrade involve a new linux kernel by chance?
You could try booting the older kernel eventually to see if it works with this one.
Newer KDE Plasma versions have this removed so that is normal. As we customized the settings in systemsettings it might leave this entry there still though it is not working anymore. Nothing to worry though.
I tried kernels 5.6.0-1 and 5.6.0-2, and both have the same problem. I will reinstall the system and keep the stable repositories.
I think it’s a hardware problem. I tried other distributions and none of them worked. I will send the laptop to autorized services.
Thank you for your time.