Re: Restarting video driver to turn on external vga port

Sat, 01 Jul 2023 00:00:09 -0700



On 30 Jun 2023, at 18:26, Robert Moskowitz <[email protected]> wrote:



On 6/30/23 13:13, George N. White III wrote:
On Fri, Jun 30, 2023 at 1:19 PM Robert Moskowitz <[email protected]> wrote:
I just rebooted after applying new updates.  In the past, this got the external video going.  Not this time.

VGA suggests an old monitor, so try to verify that it didn't fail by connecting to another system or playing
with configuration options until it works.  No point wasting time on a dead or dying monitor that is worth less
than the cost of proper disposal.

Actually the bottleneck is my KVM which only supports VGA.  The monitor works fine when I switch the kvm to another system.

In have seen issues with KVMs messing up EDID in tne past.
Suggest you test by pluging the monitor directly into your laptop.




"xrandr --query" may have some useful info.

# xrandr --query
-bash: xrandr: command not found
Check "inxi -Fzx" for missing graphics hardware.

# inxi -Fzx
-bash: inxi: command not found

FYI to install a command you can do this:

$ sudo dnf install /usr/bin/xrandr
$ sudo dnf install /usr/bin/inxi
Etc.


  There should be details in "sudo journalctl -b N"
(sudo gives details that are not included when run as regular user).   Look at a boot that worked for lines
related to the external monitor and compare with what is in the latest boot.

That may take for ever.  what file do I grep to look for dates when it worked?  I booted the system Monday after a kernel install and the video worked fine then.


One thing to watch is EDID -- some older monitors have bad data that newer drivers reject.

And what is EDID?  And would that come through the KVM?

thanks


--
George N. White III


_______________________________________________
users mailing list -- [email protected]
To unsubscribe send an email to [email protected]
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/[email protected]
Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue



_______________________________________________
users mailing list -- [email protected]
To unsubscribe send an email to [email protected]
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/[email protected]
Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
_______________________________________________
users mailing list -- [email protected]
To unsubscribe send an email to [email protected]
Fedora Code of Conduct: 
https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: 
https://lists.fedoraproject.org/archives/list/[email protected]
Do not reply to spam, report it: 
https://pagure.io/fedora-infrastructure/new_issue

Reply via email to