I have only screen res 800x600 after upgrading a few xserver packages in Ubuntu 17.04

Asked by Ubuntu Tinkerer

I have Ubuntu Unity 17.04 with linux kernel 4.10.0-37-generic. Via "sudo aptitude upgrade" I updated a few packages but now the only screen resolution available is 800x600. I also see lots of screen tearing in Google Chrome. Please tell me what logs you want me to print here.

These are the packages I upgraded via aptitude:
xserver-common:amd64 (2:1.19.3-1ubuntu1.1, 2:1.19.3-1ubuntu1.2)
xserver-xorg-core:amd64 (2:1.19.3-1ubuntu1.1, 2:1.19.3-1ubuntu1.2)
xserver-xorg-legacy:amd64 (2:1.19.3-1ubuntu1.1, 2:1.19.3-1ubuntu1.2)
xmir:amd64 (2:1.19.3-1ubuntu1.1, 2:1.19.3-1ubuntu1.2)

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actionparsnip (andrew-woodhead666) said :
#1

What is the output of:

sudo lshw -C display; lsb_release -a

Thanks

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Ubuntu Tinkerer (rationaltree) said :
#2

Thank you for trying to help me out here

lshw output:

  *-display UNCLAIMED
       description: 3D controller
       product: GM107M [GeForce GTX 960M]
       vendor: NVIDIA Corporation
       physical id: 0
       bus info: pci@0000:01:00.0
       version: a2
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list
       configuration: latency=0
       resources: memory:de000000-deffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:df000000-df07ffff
  *-display UNCLAIMED
       description: VGA compatible controller
       product: HD Graphics 530
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 06
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list
       configuration: latency=0
       resources: memory:dd000000-ddffffff memory:b0000000-bfffffff ioport:f000(size=64) memory:c0000-dffff

=========================
=========================
=========================

lsb_release output:

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 17.04
Release: 17.04
Codename: zesty

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actionparsnip (andrew-woodhead666) said :
#3

Try:

sudo apt-get --reinstall install dkms

This should rebuild the Nvidia drivers (I assume you installed the proprietary driver). If you didn't then try:

sudo apt-get --reinstall install xserver-xorg-video-nouveau

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Ubuntu Tinkerer (rationaltree) said :
#4

I don't use nvidia drivers. I just checked that the nvidia driver packages aren't installed. So I reinstalled xserver-xorg-video-nouveau just like you said. It didn't help.

Before that, I also tried to downgrade the four packages that I upgraded before this problem appeared. That didn't help either.

Naturally I rebooted after all these attempts.

Isn't this problem caused by the package xmir? That's the new Mir display server, correct? Was it just recently installed and deployed on my system when I did that upgrade or has that package been on my system since a long time?

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Launchpad Janitor (janitor) said :
#5

This question was expired because it remained in the 'Open' state without activity for the last 15 days.