I am using Ubuntu 20.04 and need help with this:
The Authentication Required window is stuck and I can't close it :(
Is there any easier ways to remove it than rebooting?
I am using Ubuntu 20.04 and need help with this:
The Authentication Required window is stuck and I can't close it :(
Is there any easier ways to remove it than rebooting?
Each time I go into suspend mode and then resume, Chrome browser displays the current tab as full of sand of colors, something like dithering in image processing.
Other tabs display glitches too.
The current solution is to close and reopen the browser.
I tested nvidia-driver-418
but got a black screen problem and reinstalled nvidia-driver-390
.
The problem is more evident in Chrome, but it sometimes appears in vscode in small areas. There, hovering the mouse over the affected place or resizing the window fixes the problem. In Kubuntu the avatar of the user in the application launcher also shows dithered.
I tested in the same machine with fedora 32 workstation(gnome), nvidia driver, and had the same problems with Chrome browser.
Could it be a GPU problem?
I don't understand why the /var/log/journal/
folder is so big.
For example, by executing the command systemctl -f
, i see the fill.
If I click on an email on Thunderbird, it generates dozens of lines that I consider useless.
Currently, I have more than 1.5GB (du -h /var/log/journal/
) generated in 1 day!
Is there a method to reduce this log considerably without stopping logging?
I just upgraded from Ubuntu 18.04 to 20.04 on one of the Dell XPS 13 machines, and the network performance is abhorrent. Internet speed is very fast from a google speed test (>300Mb/s for both upload and download).
However, whenever I try to browse a website or even run sudo apt update
the connection will often time out. My internet is very fast on all other devices and I really don't know how to debug this problem.
sudo lshw -class network -short && nmcli device status
shows
H/W path Device Class Description
==============================================================
/0/100/1c.6/0 wlp2s0 network Wi-Fi 6 AX200
/3 br-96f5b790e29e network Ethernet interface
/4 br-15e76fb81c05 network Ethernet interface
/5 docker0 network Ethernet interface
DEVICE TYPE STATE CONNECTION
wlp2s0 wifi connected CSA HQ
br-15e76fb81c05 bridge connected br-15e76fb81c05
br-96f5b790e29e bridge connected br-96f5b790e29e
docker0 bridge connected docker0
p2p-dev-wlp2s0 wifi-p2p disconnected --
lo loopback unmanaged --
gpd0 tun unmanaged --
It seems like this is a pretty common problem, and one without a definitive cause. For me, it was because Ubuntu resets the TLP configuration, and the power management went back to "on". I disabled Wi-Fi power management directly by editing:
sudo nano /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
Then changed the value from 3 to 2, saved changes and rebooted.
I actually got this solution from Reddit and this worked for my case specifically but it seems like it could be caused by a bunch of other things. Read all the proposed solutions below!