The names of my folders and the menus are not displayed correctly (even the tabs names in firefox). A lot of letters are missing. When cross over with the mouse pointer, part of them are correctly displayed. Contrary, the content of askubuntu site, for example, is displayed correct. It does not always happens, usually a restart solve the problems for a while. I have Ubuntu 14.04. I don't know how to tag this question, so I'll mark it as display related, even though is not really this.
There seems to be a (bad) fix for this problem as described here
The problem seems not to appear by using the old UXA hardware acceleration for for the Intel graphic cards.
Edit the following section of the /etc/X11/xorg.conf file such that AccelMethod is set to "uxa" or create the file if it does not yet exist:
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "uxa"
EndSection
Reboot or restart X.
The problem went away for me, but I only restarted a couple of times since I changed the file so it might still come back. Also, note that UXA acceleration is considerably slower!
edit: There is a fix for this in the repository by now. If you still experience this issue you either did not update your system for a while or it has a different cause and I suggest filing a new bug.
As mentioned in the comment above regarding the missing letters link, I have this specific problem (on 16.04, usually after returning from suspend), and so far, using unity/gnome tweak and switching fonts to greyscale anti-aliasing is working: https://askubuntu.com/a/633435/172307
This fixed the problem for me, Updated and Optimized Open Graphics Drivers
https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers
sudo add-apt-repository ppa:oibaf/graphics-drivers
sudo apt-get update
I had the same issue. I fixed it on my Chromebook Pixel LS (booting into 14.04 w/ Gnome DE) by not using any Ubuntu family fonts. YMMV
According to https://bbs.archlinux.org/viewtopic.php?pid=1633207#p1633207 this bug is caused by some unindentified change in Linux kernel version 4.3 or 4.4. Workaround is to use kernel version 4.2 or older, or update to version 4.6 or later. I don't know if kernel version 3.x has this bug.
For Ubuntu 16.04 the fix is simple:
sudo apt install linux-generic-hwe-16.04
or (to get better performance as a side-effect)
sudo apt install linux-lowlatency-hwe-16.04
Some hardware may not be compatible with lowlatency kernel so you need to test if your system works.
Installing unofficial development drivers from https://launchpad.net/~paulo-miguel-dias/+archive/ubuntu/mesa or https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers may also fix the issue.
sudo apt-get install linux-image-generic-lts-wily, and sudo apt-get remove linux-image-generic-lts-xenial
-low-latency. Or make it the other way around, why not recommending -rt or -realtime to "get better performance as a side-effect"? Refering to UbuntuStudio RealTimeKernel you should only do this, if you really need this. From my point of view, you should elaborate more on the differences between both modes.
-lowlatency kernel may affect your power saving features (I have yet to see any real world data about this, though). -rt or -realtime kernels are often inferior to -low-latency because those are not based on vanilla kernel. As a result, -rt or -realtime kernels (if available at all) are usually much older kernels than -lowlatency. In my experience, unless you know better, newer kernel release is better than older kernel with RT patches. I'm personally using -lowlatency kernels in old laptops, too.
Oct 27, 2017 at 7:22
I fixed this problem with a very easy solution , just go to ubuntu settings>universal access> large text turn on. log off from ubuntu or restart, log back in and again go to settings>universal access >large text and turn off. hope it helps.
