Bug#833895: nvidia-legacy-340xx-driver: blank screen after upgrade

[Luca Boccassi]

On Tue, 2016-08-16 at 21:36 -0500, Luis Mochan wrote:
> Dear Luca,
> As your comments hinted at a misconfiguration and it had been a very
> long time since I had used that machine, I ran a live jessie debian
> distribution and the X-windows system worked with the nvidia driver,
> but only in the failsafe mode. I decided then to make a fresh install of
> jessie and later upgraded to stretch. I haven't installed nvidia yet,
> but nouveau hadn't worked and it is working properly now, so the
> crisis of my T61 is over. I still don't know if nvidia-legacy would
> work now in my machine. I'll try it later. 
> Thanks.
> Luis

Hi,

Thanks for the update.

I also noticed later that you had some extra blacklists in
the /etc/modprobe.d directory. Also nowadays the Xorg log lives in
$HOME/.local/share/xorg so if you see the problem again please attach
the logs from there (I've updated the script to fetch it but it will
take a while to get into the distro).

For housekeeping's sake I'll close the bug for now since you don't have
the issue at the moment, please reopen it if you face it again.

Kind regards,
Luca Boccassi

> On Mon, Aug 15, 2016 at 07:24:42PM -0500, Luis Mochan wrote:
> > Hi Luca,
> > 
> > On Mon, Aug 15, 2016 at 10:10:29PM +0100, Luca Boccassi wrote:
> > > Control: severity -1 important
> > > Control: tags -1 moreinfo
> > > ...
> > > I cannot reproduce on a fresh amd64 sid install with a gtx 780, so
> > > downgrading severity as most likely cause is hardware or setup
> > > dependent.
> > OK. It is critical for me though... 
> > > I notice in the device permissions that there is no user ACL bit set:
> > > 
> > > Device node permissions:
> > > crw-rw---- 1 root video 226,   0 Aug  9 21:32 /dev/dri/card0
> > > crw-rw-rw- 1 root root  195,   0 Aug  9 21:32 /dev/nvidia0
> > > crw-rw-rw- 1 root root  195, 255 Aug  9 21:32 /dev/nvidiactl
> > 
> > Should there? 
> > 
> > > video:x:44:mochan,david,luquesnel,elias,gatis,david,irina
> > > 
> > > Is your user one of those listed in the "video" group?
> > 
> > Yes. Nevertheless, I don't even get to the login screen, so the
> > problem appears before I'm become user.  I tried adding lightdm to the
> > group video, but it didnt work either.
> > 
> > > What is the output of "getfacl /dev/dri/card0"?
> > 
> > mochan at fmunu:~$ getfacl /dev/dri/card0
> > getfacl: Removing leading '/' from absolute path names
> > # file: dev/dri/card0
> > # owner: root
> > # group: video
> > user::rw-
> > group::rw-
> > other::---
> > 
> > > Are you running systemd + logind?
> > 
> > Running ps -e returns the lines:
> > 
> > mochan at fmunu:~$ ps -e|grep systemd
> >   862 ?        00:00:00 systemd-udevd
> >  4288 ?        00:00:00 systemd-logind
> > but the program with pid=1 is init.
> > Is there another test to better find out?
> > 
> > Thanks and best regards,
> > Luis
> > 
> > 
> > -- 
> > 
> >                                                                   o
> > W. Luis Mochán,                      | tel:(52)(777)329-1734     /<(*)
> > Instituto de Ciencias Físicas, UNAM  | fax:(52)(777)317-5388     `>/   /\
> > Apdo. Postal 48-3, 62251             |                           (*)/\/  \
> > Cuernavaca, Morelos, México          | mochan at fis.unam.mx   /\_/\__/
> > GPG: 791EB9EB, C949 3F81 6D9B 1191 9A16  C2DF 5F0A C52B 791E B9EB
> > 
> > 
> 


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