Ubuntu 16.04 Low Graphics Mode

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RogerDavis

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Joined
May 15, 2018
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After a recent update (kernel?), I have begun to occasionally receive the message "Running in Low Graphics Mode" at boot (maybe half the time). I can tell it to use Default setting from the options it offers, and get by it, after which things look and work normally, even after some reboots.

I also usually get "System error detected, Report? at the same time, so I agree to report it.

Please note that I'm using 16.04 (fully updated), Gnome Flashback Metacity, with [AMD/ATI] Cape Verde PRO [Radeon HD 7750/8740 / R7 250E] .

This problem shows up no matter which of the above I'm using, or Unity...

[email protected]:~$ uname -a
Linux roger-desktop 4.4.0-124-generic #148-Ubuntu SMP Wed May 2 13:00:18 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

I've seen some suggestion like :
# sudo apt-get update
# sudo apt-get remove ubuntu-desktop
# sudo apt-get install ubuntu-desktop
# sudo shutdown -r now
But these are all quite old, at least 3 years, up to 6 or more years, and some of the simple items in some of these (boot while holding (shift), ... just don't work, so I'm afraid of them.

I's unclear to me if this would wipe out my Gnome and Cinnamon, etc. installations, or if that is separate and safe. Please advise...

There appears to be plenty of memory and storage available.

[email protected]:~$ free -m
total used free shared buff/cache available
Mem: 16013 3880 10410 363 1722 11443
Swap: 16348 0 16348

[email protected]:~$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 7.8G 0 7.8G 0% /dev
tmpfs 1.6G 9.6M 1.6G 1% /run
/dev/sda1 902G 77G 779G 9% /
tmpfs 7.9G 127M 7.7G 2% /dev/shm
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 7.9G 0 7.9G 0% /sys/fs/cgroup
cgmfs 100K 0 100K 0% /run/cgmanager/fs
tmpfs 1.6G 52K 1.6G 1% /run/user/1000


Also, if I simply go to 18.04 ( don't really want to just yet ) will it likely fix this in the process, or might this block or damage the upgrade ?
 
Joined
May 28, 2018
Messages
154
In Debian using Synaptic, the application manager, running "sudo apt-get update" updates the application database. It doesn't update all programs that you have installed. I wouldn't run "sudo apt-get remove ubuntu-desktop" and "sudo apt-get install ubuntu-desktop" because that may not be the problem from reading the following page.

https://askubuntu.com/questions/141...ce=google_rich_qa&utm_campaign=google_rich_qa

The silly message "Running in Low Graphics Mode" from the above URI can mean many different things. It will be nice to see some logs. Logs in Linux are located in /var/log. I think posting logs for booting and Xorg will be helpful. In order to do this without GUI, hit CTL+ALT+F1 (Function Key). This will go to one of the virtual terminal BASH logins. I think CTL+ALT+F5 is GUI for Debian/Ubuntu. A flash drive can still be accessible in this mode. One problem Linux won't tell you where. You have to run dmesg to find out what directory is mounted to. Can also use mount -v and it will also tell you where the flash drive is mounted.

You can install Ubuntu 18.04. Do a fresh install instead of upgrading. Ubuntu developers may have fixed the problem in the latest version. You may have already upgraded when you read this, but probably didn't do a fresh install.
 
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