With the possibility of an update of xorg, I'd like to bring up my problem again. I am looking for suggestions on how I should debug this to find if this is a xorg problem or the issue lies somewhere else.
Thanks. -------- Original Message -------- From: H <age...@meddatainc.com> Sent: January 2, 2025 2:48:08 PM GMT-05:00 To: xorg@lists.x.org, Alan Coopersmith <alan.coopersm...@oracle.com>, xorg Mailing List <xorg@lists.x.org> Subject: Re: Xrandr and external monitor On January 2, 2025 11:58:06 AM EST, Alan Coopersmith <alan.coopersm...@oracle.com> wrote: >On 1/1/25 12:27, H wrote: >> I just discovered running xrandr --listmonitors that, while the >internal laptop monitor is labeled eDP-1, xrandr identifies the >external monitor as using DP-1 although it uses the laptop >HDMI-connector. Further, while mate hardware display monitor also >identifies it as using DP-1 - possibly based on xrandr output - the >monitor itself tells me it is connected using its HDMI1 connector. >xrandr does report the correct display resolution, though. >> >> Thus, it looks like xrandr misreads the configuration feeding it to >mate. > >The xrandr program and GUIs like the mate monitor configuration use >libXrandr to >get the configuration information - all it does is ask the Xserver for >the >information provided by the video driver. If these programs are >showing the >wrong config it's because the Xorg video driver module has provided >them with >the wrong information. (You don't say what Xorg video driver you're >using >- modesetting or something more specific to the hardware - the >Xorg.0.log >should list that and may list the output config detected by it.) So the problem could lie with x or with the video driver, the latter reporting to X? According to X.org.log I am running X Server 1.20.11. One of my concerns is why X reports that DP-1 connection is used with the external monitor whereas it in reality uses HDMI without any adapters. That suggests something is reported incorrectly which could conceivably lead to some other problem. I am attaching X.org.log which to me seems to suggest that it is using the noveau driver. Note that I just tried to disconnect/reconnect the external monitor but could not find any log of that connection towards the end of the log.
