How to remove all packages installed which are not in the repositories and install the current repositories’ equivalents

I mistakenly switched my repositories to Zesty’s and upgraded all the packages. Now that I reverted to Yakkety, is there a way I can make apt uninstall all Zesty’s packages and reinstall Yakkety’s equivalents? Output of lsblk: NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT loop0 7:0 0 115M 0 loop /snap/vlc/4 loop1 7:1 0 78,3M … Read more

“File type RAR archive (application/x-rar) is not supported”

I’m trying to open these comic (CBR) files using comix, mcomix, and evince. file Venom* Venom 163 (2018) (Digital) (Zone-Empire).cbr: RAR archive data, v1d, os: Win32 Venom – First Host 001 (2018) (Digital) (Zone-Empire).cbr: RAR archive data, v1d, os: Win32 Is it not possible to open these file types using ubuntu? Answer AttributionSource : Link … Read more

Failed to connect to lvmetad

After upgrading to ubuntu 16.10 I get this warning in my boot.log file WARNING: Failed to connect to lvmetad. Falling back to device scanning. Volume group “ubuntu-vg” not found Cannot process volume group ubuntu-vg WARNING: Failed to connect to lvmetad. Falling back to device scanning. Reading all physical volumes. This may take a while… Found … Read more

Firefox Widevine plugin crashes immediately after upgrade to Ubuntu 16.10

After I upgraded to Ubuntu 16.10 I am experiencing an immediate crash when trying to watch a video which uses the Widevine plugin. I am using Firefox 49 Widevine works fine in Chrome I logged into guest mode and tried it there, but same problem occurs One of some crash reports I sent with Firefox: … Read more

My drivers recognize my graphics card, but nvidia settings do not [closed]

Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it’s on-topic for Ask Ubuntu. Closed 4 years ago. Improve this question I’m really sorry to be a bother with this, I’m having problems getting my graphics card to work properly on my computer. PC … Read more