[colug-432] Supported Video CentOS 6 #2

[Rick Hornsby]

On Feb 21, 2012, at 15:01 , Thomas Cranston wrote:

> On 2/21/12, Rick Hornsby <richardjhornsby at gmail.com> wrote:
>> This is intentional, and doesn't mean anything is wrong.
> 
>> The installer is running a low resolution mode for maximum compatibility w/ the most hardware to avoid crashing the system during the install and b/c high res isn't needed.
>> 
> The Installer is not running.
> 


Sorry.  When you said "I did the install" and "why does the install only run..." it appeared that you meant during the install process, not after it had completed successfully.

Unfortunately, it has been a long time since I dove into the guts of X.  It was one of the things that I finally got fed up with in Fedora, bleeding edge that it was/is - and honestly Linux on the desktop in general.  I was tired of fighting with the computer to fix a minor issue in X, only to have all of X break for no obvious reason.

I can't fully explain why it worked running the LiveCD but not once installed.  There must be some kind of a difference in how or what video drivers are getting installed/loaded, or that X isn't getting the correct one?  You might try to take a look in /var/log/X* for clues if something is going wrong while X is starting up.  Maybe even compare that to what you see in /var/log/X* after you boot from a LiveCD.

My own personal opinion is that for skill topics, fixing problems with X is among the more advanced.  In my experience it is generally less obvious why certain things are happening (or not) when it comes to X than other parts of the system.

-rj



>> 
>> 
>> 
>> Sent from my iPhone
>> 
>> On Feb 21, 2012, at 12:16, Thomas Cranston <thomas.w.cranston at gmail.com>
>> wrote:
>> 
>>> I just ran CentOS 6.0 i386 Live CD, and Live DVD, And they both ran
>>> the Radeon RV100 QY [Radeon 7000/VE] AGP video card At many
>>> resolutions up tp 1920 X 1200.
>>> 
>>> I did the install from the Live DVD, maybe theLive CD.
>>> 
>>> So why does the install only run the video at 800 X 600, while the
>>> Live sessions run video at about any resolution up to 1920 X 1200?
>>> 
>>> I also ran the Live CD on an old Dell Optiplex GX110 where it would
>>> display up to 1920 X 1200.
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> I am no longer at the installation stage. CentOS has been installed
> for quite a while now, so why can't it run the video at a higher
> resolution now?
> 
> Tom
> 
> Logged in as root:
> 
> System ->Administration->Display->Settings-> Resolution, the dropdown displays:
> 640 X 480
> 800 X 600
> 1024 X 768
> ...
> ....
> 2048 X 1536
> I can select different settings, follow instructions, reboot, but the
> display always comes up 800 X 600
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