On Tue, 26 May 2020 at 16:19, Michael Hennebry <hennebry@web.cs.ndsu.nodak.edu> wrote:
On Tue, 26 May 2020, George N. White III wrote:

> On Tue, 26 May 2020 at 04:25, Michael Hennebry <
> hennebry@web.cs.ndsu.nodak.edu> wrote:
>
>> On Tue, 26 May 2020, Michael Hennebry wrote:
>>
>>> How do I get xrandr or something else to do what I want,
>>> i.e. change my resolution to 1440x900
>>> when using the live DVD..

> We can't provide useful answers without more details of your hardware.
> Were you running Centos 7 on the same HP Compac (sic) dc5800 Small Form
> Factor?  If so were you using 32-bit or 64-bit CentoOS 7?  Are you using a
> KVM switch?   The dc5800 came in many configurations, with RAM as little as

Yes.  64-bit.  No.

> 2GB and optional graphics cards.   Onboard graphics usually steals system
> RAM memory space, so with 64-bit OS and 2G RAM you could be stuck with low
> resolution.  KVM switches sometimes fail to pass correct monitor details.

I upgraded from 2GB to 8GB.

liveuser@localhost-live ~]$ lspci | head -3
00:00.0 Host bridge: Intel Corporation 82Q33 Express DRAM Controller (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82Q33 Express Integrated Graphics Controller (rev 02)
00:03.0 Communication controller: Intel Corporation 82Q33 Express MEI Controller (rev 02)

This should be using the i915 driver, but  https://unix.stackexchange.com/questions/110573/what-is-i915-modeset-1-for#110589 may explain some of your symptoms and has links to troubleshooting
examples.  I remember fighting with graphics on similar systems at work after they failed to run the new version of Windows.  Ours had ATI cards but the drivers were buggy.   I used to keep a collection of graphics cards for such situations, but in this case (with 2G RAM) I used them in headless mode.
 
[liveuser@localhost-live ~]$

> What does "env | grep wayland" give?

liveuser@localhost-live ~]$ env | grep -i wayland
[liveuser@localhost-live ~]$

> What do you get from "xrandr" without options?

liveuser@localhost-live ~]$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 640 x 480, maximum 640 x 480
default connected primary 640x480+0+0 0mm x 0mm
    640x480        0.00*
[liveuser@localhost-live ~]$

Note maximum 640 x 480 .

Expected when using VESA.
 

> Are there errors in Xorg.0.log?

Yes.
 
Expected for VESA.   

--
George N. White III