Maybe I did something wrong but I had the same problem when switching my
two NEC MultiSync LCD 1850X to two Acer AL1916W.
1. First I shutdowned my computer and made the switch
2. Then I booted and noticed weird resolution glitches and desktop effect
didn't work (restricted driver got disabled ?!)
I tried the get-edid and parse-edid, but those commands were not found
on my system.
Here is the output from ddcprobe:
vbe: VESA 3.0 detected.
oem: NVIDIA
vendor: NVIDIA Corporation
product: G71 Board - p455h7s Chip Rev
memory: 262144kb
mode: 640x400x256
mode: 640x480x256
mode: 800x600x16
mode: 8
Seems like the new revision uses a different edid. Please append the
output of the following commands: "sudo get-edid|parse-edid" and "sudo
ddcprobe".
--
Screens and Graphics Preferences fails to detect updated monitor.
https://bugs.launchpad.net/bugs/153918
You received this bug notification bec
Thank you for taking the time to report this bug and helping to make
Ubuntu better. This bug did not have a package associated with it, which
is important for ensuring that it gets looked at by the proper
developers. You can learn more about finding the right package at
https://wiki.ubuntu.com/Bugs
