[Discuss] Kubuntu == display quit working

[Deryk Barker (Honorary Colleague)]

Oh, I had video, just low-res. Only when I bought a new monitor and connected the old one to my wife's machine and it worked perfectly immediatley did I realise there had been a cabling problem.

deryk

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Deryk Barker, Faculty Emeritus
Computer Science Department
Camosun College, Victoria BC

________________________________________
From: discuss-bounces at vlug.org [discuss-bounces at vlug.org] on behalf of Murray Strome [wmstrome at shaw.ca]
Sent: Monday, September 07, 2015 6:12 PM
To: discuss at vlug.org
Subject: Re: [Discuss] Kubuntu == display quit working

Yes, that is not the problem. I have video, it is just that the resolution is so low. With sysinfo, it does see the amd video chipset, but somehow the driver is not working properly.

Murray

----- Original Message -----
From: Deryk Barker (Honorary Colleague) <dbarker at camosun.bc.ca>
To: discuss at vlug.org
Sent: Mon, 07 Sep 2015 16:37:31 -0600 (MDT)
Subject: Re: [Discuss] Kubuntu == display quit working

Without boring you with a long, similar story - I'd check that the monitor cable is connected firmly.

deryk
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Deryk Barker

From: discuss-bounces at vlug.org [discuss-bounces at vlug.org] on behalf of Murray Strome [wmstrome at shaw.ca]
Sent: Sunday, September 06, 2015 7:29 PM
To: VLUG
Subject: [Discuss] Kubuntu == display quit working

I really hate it when this happens (which does so every once in a while)! After the last reboot, my display came up in very low resolution. It looks as if it is no longer properly detecting my video card/monitor, or the drivers have gotten clobbered. I tried to switch drivers, after which it doesn't work at all!

Now when I reboot, the monitor says:
DSUB
OUT OF RANGE
75.6KHz - 60Hz

I can boot into recovery mode and check disks, etc. (it says everything is OK), and can get into console mode but I don't know what to do next to repair the display system.
I tried a live DVD of Kubuntu 15.10, and the resolution is bad there as well.

There does not seem to be much point in doing a fresh install if the live DVD doesn't work properly! Is there anything I should check in the EFI/BIOS? There is not much room for an external video card if there is something wrong with the on-board video. Perhaps I could try installing a different driver, but would not know what to look for.
Any suggestions would be most helpful.

Thanks in advance.

Murray