Search:

Answering my own question: Reinstalling the Nvidia drivers solved the problem:

sudo ubuntu-drivers autoinstall
sudo reboot

For literally years, I have used Xubuntu with two screens. This morning - no. One screen is blank (black, not even a background) except it does display the mouse pointer.

I can mirror the screens...

Hmmm... Workflow is definitely the same on both machines, it's just a question of whether I'm at a desk or underway. So the same tools are installed. I will try to keep track of which tools are open...

Thanks for the replies. The problem occurs so irregularly that experimentation is difficult. BIOS seems unlikely, since the machines are very different (and from different manufacturers). Memory is...

This problem occurs on both my laptop and my desktop, which have very different hardware (e.g., Intel vs. AMD). Both running Xubuntu 22.04.

Once every day or two, the computer will refuse all...

Found the problem, although I don't understand the cause. Apparently Cisco also relies on Firefox for certificates. In Firefox, the certificate database was damaged (certutil could not open it)....

Possibly related? I came here today to ask for help with a browser certificate problem. I have a PC and a laptop with (theoretically) identical Ubuntu 16.04 installations. Starting about a week ago,...

SOLVED: Open the ATI Catalyst control center and use it to confirm the settings. Assuming your desktop is set up the way you want, do the following:

1. Open: System/Preferences/ATI Catalyst...

Bump - any ideas why the second monitor is messed up at boot?

Note: I can open System-Administration-Monitors

- then disable the second monitor and apply

- then say "restore previous...

Same error here in Lucid, using a Kodak. The camera worked fine with earlier Ubuntu versions.

New machine with an ATI 5770, with a fresh install of Ubuntu 10.04 (lucid, 64-bit). What a mess!

As reported elsewhere, the initial install sometimes came up with a black screen, or corrupted...

I use my laptop (Jaunty 9.04) for presentations, and recently installed the proprietary Nvidia drivers. This means that, to connect to the projector, I have to use the "NVIDIA X Server Settings"...

I have a small mystery regarding OpenVPN - I hope some guru out there can help. Here's the situation:

I want to establish a VPN for use by a single client. The server runs OpenVPN 1.6; the client...

Here is the best answer I've come up with - perhaps this will be of help to others.

1. Determine the highest resolution of any external monitor or projector that you will ever use. Remember that...

bump. Does anyone else have such a problem? Any ideas?

I have a laptop (Ubuntu 9.04) that I use at my desk - attached to a docking station and monitor - and that I also use for presentations. The presentations are in rooms with fixed projectors, and the...

There are two things here:

First: entire classes of Gnome applications fail to print to printers requiring Windows authentication. This is a known bug, but apparently as yet (September 2009)...