As my old thread has been hijacked, I thought that I'd better start a new one.

Teemu Likonen wrote on 07/17/2017 03:09 PM:
> D. R. Evans [2017-07-17 14:19:32-06] wrote:
>
>> Beginning a couple of weeks ago, I started to experience occasional freezes 
>> or
>> sudden blank screens on my 64-bit jessie system.
>
>> Jul 17 13:58:23 homebrew kernel: [24262.075187] nouveau E[     DRM] GPU 
>> lockup
>> - switching to software fbcon
>>
>> I don't know how a particular driver gets chosen by the system, but is there 
>> a
>> different driver I could try?
>
> I have an Nvidia card and experienced complete lockups with nouveau
> driver. Solution: Install nvidia-driver packages and all is working
> well. Just one additional problem: non-free software.
>

I have installed the nvidia-driver package.

At that point X did not start on boot, so I installed nvidia-xconfig and ran
it. It gave half a dozen errors, but on reboot X started and looks good.

How do I confirm that I am actually using the proprietary driver rather than
nouveau?

I am 99+% sure that the proprietary driver is being used, because the screen
looks quite different during the boot sequence, and slightly different once I
have a desktop. But I'd like to know how to confirm the fact.

Thanks to people for their helpful suggestions about installing the
proprietary driver (sorry it took so long to actually get it done: I had some
work in progress for a client, and didn't want to run a risk of ending up
without a working graphical desktop. That work ended yesterday, so this is the
first time it's felt safe to try the switch to the new driver.)

  Doc

-- 
Web:  http://enginehousebooks.com/drevans

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