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Unanswered Questions

4,676 questions with no upvoted or accepted answers
9 votes
2 answers
3k views

xorg.conf XkbOption ignored for terminate:ctrl_alt_bksp to restart X

I want Ctrl+Alt+Bksp to restart X, so I created an xorg.conf rule: /usr/share/X11/xorg.conf.d/53-zap.conf: Section "ServerFlags" Option "DontZap" "false" EndSection Section "InputClass" ...
9 votes
6 answers
26k views

Ubuntu 20.04 upgrades breaks keyboard/mouse

I was using 19. Ubuntu recommended an update. I clicked all the buttons and let it do its thing. After the update restarted the computer, I tried using the mouse. Nothing. I tried the keyboard. ...
9 votes
3 answers
8k views

Cannot see packets arrive on application socket that were seen by Wireshark

Using Ubuntu 14 I have a Linux machine where there are two interfaces: eth1: 172.16.20.1 ppp0: 192.168.0.2 ppp0 is connected to a device which has a PPP interface (192.168.0.1) and a WAN interface (...
8 votes
0 answers
1k views

Processor frequency stuck at minimum despite using performance governor. Kernel and hardware disagree on the frequency?

I am using a MacBook Retina with four processor cores on Linux (Ubuntu 18.04): $ grep -E '^model name|^cpu MHz' /proc/cpuinfo model name : Intel(R) Core(TM) i5-4258U CPU @ 2.40GHz cpu MHz : 799....
8 votes
0 answers
5k views

Extremely high memory usage Android studio and emulator

After upgrading Android Studio to 2.3, I've encountered extremely high memory usage. Previously, I would keep my pc(including Android studio and emulator) on for several weeks, and RAM usage would ...
8 votes
1 answer
28k views

How to get to recovery mode if grub screen does not appear?

I cannot login my Ubuntu12.04 (which is VM running on OSX using VMWARE FUSION 6) because I have changed permission of /tmp for some purpose before rebooting the machine. Thus I tried to boot Ubuntu ...
7 votes
0 answers
1k views

Webcam from Windows to Ubuntu via XRDP

Situation: Windows 10 machine with integrated webcam and external USB webcam. Ubuntu 20.04 desktop Connection via xRDP from Windows to Ubuntu (with both webcams being selected under the "local ...
7 votes
1 answer
1k views

ThinkPad second "sticky" backspace key

I have bought a Lenovo ThinkPad T580, and noticed that in the upper right corner of the keyboard, there is a second backspace button (in addition to the other backspace button right above the ENTER-...
7 votes
1 answer
14k views

Ubuntu - lftp will not connect to ftps site (Fatal error: gnutls_handshake: An unexpected TLS packet was received.)

I have a specific ftps site that I cannot connect to with lftp. When I attempt to connect I get the error: Fatal error: gnutls_handshake: An unexpected TLS packet was received When I use gnutls-cli ...
7 votes
0 answers
3k views

Apple MagicTrackpad2 on Ubuntu

I bought an Apple Magic Trackpad2 and want to use it on Ubuntu 16.04. Actually moving the pointer works, but e.g. two finger scrolling or tap to click doesn't. So I came up with the following ...
6 votes
0 answers
4k views

How to make nfsv4 ID mapping work between macOS Big Sur client and Ubuntu 20.04 server 2021

Can nfsv4 ID mapping work between macOS and Linux without an Open Directory server? nfs version is 4, all versions 1…3 are disabled Kerberos is MIT Share sec is krb5p The realm is REALM.COM and nfs ...
6 votes
0 answers
8k views

Xorg running from user can't access /dev/dri/card0

Got a strange problem on Ubuntu 20. I'm trying to get hw accelerated xrdp Xorg session. Computer video is Mesa DRI Intel(R) HD Graphics 4600 (HSW GT2). I fetched compiled and installed devel branch ...
6 votes
0 answers
4k views

Why are the permissions of /run/user/1000 wrong

My /run/user/1000 directory is owned by root - as far as I understand it, it should be owned by my user - I'm unable to start any snap programs (e.g., slack) as I get this error: mkdir: cannot create ...
6 votes
1 answer
6k views

Sound through only left speaker, (but hardware is OK)

I have Ubuntu 19.04, and I am facing issues with sounds. When playing audio, I get audio through only one of the speakers (the left one, that is). Also, the volume is pretty low. I run the same on ...
6 votes
0 answers
875 views

Possible xorg memory leak

My problem in one picture : The memory usage of xorg as a child process of sddm keeps growing with time. Everytime I restart my computer, the problem reappears after a few dozens of minutes. I tried ...

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