[arch-general] External monitors are no longer detected (Intel graphics)

David C. Rankin drankinatty at suddenlinkmail.com
Tue Jul 2 07:46:02 UTC 2019

On 07/02/2019 01:01 AM, Bennett Piater wrote:
> Hi,
> I'm using a Thinkpad T450s with Intel graphics.
> Yesterday, I could no longer connect external monitors via miniDP.
> They were not detected at all, either by xrandr in i3 or by sway (wayland).
> I didn't have time to dig out a VGA cable and try that, so I cannot rule out
> physical damage yet - I did try 2 monitors with different cables, both of
> which work with my wife's Thinkpad.
> Since wayland doesn't make a difference, I'm thinking maybe something broke
> with the (my?) drivers?
> Is there any other possibility apart from physical damage, and what do I try
> next?
> Cheers,
> Bennett

Have you checked the troubleshooting options on
https://wiki.archlinux.org/index.php/Intel_graphics. I also recall an intel
issue with recent kernels, but can't put my hand on a link. The problems
experienced with some are listed in the wiki.

David C. Rankin, J.D.,P.E.

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