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Month: August 2017

Re: [trinity-users] Displays ... again ...

From: Felix Miata <mrmazda@...>
Date: Mon, 14 Aug 2017 17:28:04 -0400
Peter Laws composed on 2017-08-14 14:51 (UTC-0500):

>  GMail no longer supports Quote Selected Text, so replies have become
> laborious - bear with me. 

I almost never think about quoting selected. It's too simple just to intersperse
the new and delete the unneeded at any point in a traditional email client. How
the Gmail editor could foul that ability up I can't fathom.

> Felix Miata wrote:
> xrandr: Failed to get size of gamma for output default
> Screen 0: minimum 640 x 480, current 2560 x 1440, maximum 2560 x 1440
> default connected primary 2560x1440+0+0 0mm x 0mm
>    2560x1440      0.00*
>    1600x1200      0.00
>> Is there a firmware package for NVidia hardware that needs to be installed?

> No idea.  Maybe, since the CentOS installed only works in "basic
> graphics mode" (cleverly hidden under the troubleshooting menu in the
> GRUB menu).
Grub's non-default selections usually limit Xorg's ability to function. What's
on the cmdline in yours' default?

> grepping the RPMs installed, I see
> xorg-x11-drv-nouveau-1.0.11-4.el7.x86_64 (in addition to many other
> xorg packages including xorg-x11-server-Xorg-1.17.2-22.el7.x86_64 )

The modesetting driver is integrated in the server. Is the failure the same
after removing the nouveau driver package to enable the integrated driver and

Note that Debian and Fedora 6 months ago or longer made the integrated
modesetting driver the default for most non-antique gfxchips. Other distros have
at least acknowledged that FOSS driver development has been heavily focused on
minimizing the need for gfxchip-specific drivers.

>> Do either 'dmesg | grep fail' or 'systemctl | grep fail' provide clues?

> Yes, both fail to provide clues. 

Might be one that one of us could spot if we could see Xorg.0.log.

>> According to Wikipedia, the M2000 was released 2016-04-08. CentOS 7 provides
>> server 1.17.2, which is older, and kernel 3.10, which is much older. The OP
>> reports your system had been working with proprietary NVidia drivers. Could it
>> be that that was because required M2000 support in FOSS hadn't been backported
>> to CentOS7?

> You got me.

Your is unlikely a problem specific to TDE. TDE cannot use a screen that xrandr
cannot find. Thus, querying a forum with more CentOS and/or recent video
hardware users is more likely to get needed results.

Something else to think about: boot a live disk of something recent enough that
it surely should support M2000 out of the box.
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***