All Questions
59,637
questions with no upvoted or accepted answers
24
votes
0
answers
2k
views
Why does ZFS scrub not complete?
First off let's start with what I'm running. This is a home media server running Ubuntu 16.10. I have one pool of mirrored 6 terabyte drives that are about half full. I built the system about a month ...
- 341
20
votes
0
answers
14k
views
Chrome crashing with open /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq: No such file or directory (2)
When I open Chrome, with a Python module named subprocess, it crashes and gives me these errors:
[1103/163807.480539:ERROR:file_io_posix.cc(144)] open /sys/devices/system/cpu/cpu0/cpufreq/...
- 301
18
votes
1
answer
3k
views
zsh can't input to terminal when piping stdin and stdout with variable command that has tty output
System info:
macOS Sierra 10.12.6
zsh 5.4.2 (x86_64-apple-darwin16.7.0)
GNU bash, version 4.4.12(1)-release (x86_64-apple-darwin16.3.0)
Scroll to the EXAMPLES at the bottom if you just want to dig ...
- 508
17
votes
1
answer
2k
views
wpa_supplicant end process if wrong password detected
Normally when I run wpa_supplicant I'll get some output like this:
Successfully initialized wpa_supplicant
ioctl[SIOCSIWAP]: Operation not permitted
ioctl[SIOCSIWENCODEEXT]: Invalid argument
ioctl[...
- 10.3k
17
votes
4
answers
7k
views
Microphone volume on USB soundcard very low, snd_usb_audio options?
I have a C-Media USB soundcard installed on my Raspberry Pi: Bus 001 Device 004: ID 0d8c:0008 C-Media Electronics, Inc.. It is a USB cable with an XLR end on the other side, to which I have an XLR ...
- 421
17
votes
2
answers
6k
views
Fractional scaling in GNOME + Wayland above 200%
I've successfully enabled fractional scaling on my GNOME 3.38 + Wayland in Arch as stated here:
https://wiki.archlinux.org/index.php/HiDPI#Wayland
However, in gnome control center it now only shows ...
- 3,599
15
votes
1
answer
3k
views
How to exit from videotest in the grub?
I am checking different video resolutions in the grub menu by using videotest and vbetest programs and can't go back to the grub command line, after using this programs. System doesn't respond - like ...
- 4,123
14
votes
1
answer
4k
views
How can I make a device available inside a systemd-nspawn container with user namespacing?
I would like to mount an encrypted image file using cryptsetup inside a systemd-nspawn container. However, I get this error message:
[root@container ~]# echo $key | cryptsetup -d - open luks.img luks
...
- 896
14
votes
1
answer
709
views
Disabling system modal behaviour of GNOME 3 password prompts
When GNOME Keyring, needs a password to add an SSH key to the agent, it pops up a system modal prompt to get the password from you. I use KeePass, so this means that if I forgot to copy the password ...
- 241
13
votes
0
answers
614
views
How to increase sound volume on eMac P69 running FreeBSD 10.3?
I've got FreeBSD 10.3 (PowerPC) installed on eMac P69.
I'm using MPlayer to test loudness. I already use -af volume=10:1-like options but they tend to distort sound pretty quickly + it is not really ...
- 4,773
13
votes
1
answer
4k
views
NetworkManager Default Connection Settings
I'm trying to modify NetworkManager's default DNS settings so that whenever I add a new connection it uses 127.0.0.1 instead of the default DNS for that connection. I still would like to be able to ...
- 393
13
votes
1
answer
8k
views
NVMe PCIe disk power cycling
I want to test an NVMe SSD that is connected to a PCIe slot of my motherboard.
The test procedure is a specific algorithm that writes workloads to the SSD, while the SSD is exposed to radiation (e.g., ...
- 243
13
votes
3
answers
970
views
Emacs slow loading time with AUCTeX on TeX files
I installed the auctex and emacs packages on two Xubuntu 14.04 computers, both of which have been working fine. Emacs itself works fine on both, but now with the auctex package installed, when I load ...
- 441
12
votes
1
answer
2k
views
Are there any color filters for color vision deficiencies? (Deuteranomaly, Protanomaly)
I have red-green-weakness (a bit of both, deuteranomaly and protanomaly) and on Windows there was a very helpful feature to convert the for me difficult-to-distinguish colors to nearby ones on the ...
- 121
12
votes
0
answers
10k
views
show running config of samba
Is there a way to unambiguously get the running config of a samba daemon?
I can't find any reference to it in the manual. Of course you run testparm, but that would only show the validity of the ...
- 739
12
votes
0
answers
4k
views
Zathura's best-fit command ('a') for documents with varying page size
I'm usually using the wonderful document viewer 'zathura' for reading PDF-files. Typically, for some documents, the first page of the document is slightly larger than the rest (for example, a ...
- 221
12
votes
3
answers
9k
views
USB ports keep resetting on Linux
Problem
USB Ports (2.0) keep resetting causing connected peripherals to stop working after some time.
Hardware
Motherboard: ASUS J1800I-C
CPU: Intel(R) Celeron(R) CPU J1800 @ 2.41GHz
RAM: 4GB
...
- 221
12
votes
1
answer
3k
views
How do I refresh the Google calendar in Gnome?
I'm using Gnome 3.14 on Arch Linux. I'm fond of the calendar drop-down when you click on the time in the top panel. I've set up my Google calendar to show there, but if I happen to be offline when ...
- 1,336
12
votes
0
answers
33k
views
So, what do I do with the output of yum check?
When I run yum check (or try to use yum to update my system generally), I get the following:
# yum check
Loaded plugins: langpacks, presto, priorities, refresh-packagekit
krb5-devel-1.10.2-12.fc17....
- 457
12
votes
2
answers
4k
views
Benefiting of sched_autogroup_enabled on the desktop
I am running a 2.6.37 kernel with sched_autogroup_enabled set to 1. I am not certain that I am seeing the benefits of this patch since:
I am launching my applications from the desktop;
applications ...
- 940
12
votes
1
answer
12k
views
How to deal with freezes caused by autofs after network disconnect
I mount four servers (3 via cifs, 1 via sshfs) using autofs.
auto.master
/- /etc/auto.all --timeout=60 --ghost
auto.all
/mnt \
/server1 -fstype=cifs,rw,credentials=/etc/.smbcredentials....
- 328
12
votes
1
answer
6k
views
nvidia-smi hangs indefinitely: what could be the issue?
I try to run nvidia-smi from the shell on a machine, but it hangs indefinitely: what could be the issue?
Update (2016-08-09): Since this question received no answer, I crossposted it:
https://...
- 4,987
11
votes
0
answers
2k
views
What network connections are not seen by netstat/lsof/ss?
Network monitoring tools ss, lsof -i, netstat -ltupw and similar have limitations like namespace and thus they don't show the whole machine connections. (for namespace created with ip we can see other ...
- 14.4k
11
votes
0
answers
3k
views
Is it possible to change systemd private tmp directory?
I am running some programs on both Debian and Fedora. When I ls the /tmp directory, I see many directories with extremely long name like
systemd-private-d85027...-bluetooth.service-qxzMGm
systemd-...
- 459
11
votes
0
answers
2k
views
Devilspie on Wayland
I have just upgraded to Ubuntu 17.10 and I'm now using Gnome 3 native over Wayland. My problem is that I have been using devilspie to place windows on the screen in the desired position. I also use ...
- 211
11
votes
0
answers
2k
views
Smartcard "sharing violation" when using OpenSC and GnuPG
On my Linux machine (Arch Linux, up to date as of this post) I am having trouble using both the OpenSC PKCS11 module and GnuPG.
It seems like while an app using the PKCS11 module is started (in my ...
- 535
11
votes
1
answer
7k
views
"nl80211: 'nl80211' generic netlink not found" when starting hostapd
I have been trying to get my Ubuntu 11.10 laptop to make an access point to connect my blackberry playbook . hostapd gave error
Configuration file: ./hostapd-minimal.conf
nl80211: 'nl80211' ...
11
votes
5
answers
425
views
How to disable trackpad taps in Yellow Dog Linux?
I just installed Yellow Dog Linux 6.2 on an old PowerPC laptop.
By default, it's interpreting trackpad taps as clicks, which I want to
disable.
I followed the directions here, and put TRACKPAD_OPT=...
- 1,659
10
votes
1
answer
741
views
Why does ZFS rollback destroy intermediate snapshots?
Having used btrfs before, I was surprised to find out that rolling back a snapshot in ZFS not only changes the “working set” of files, but also requires that any snapshots which are newer than the ...
- 330
10
votes
1
answer
10k
views
Accounting for /proc/net/dev reported traffic
I noticed that according to /proc/net/dev I am constantly receiving around 6Kb/s on my wireless usb interface. But I can't account for anything even close to that with the individual connections that ...
- 722
10
votes
0
answers
1k
views
What does hierarchy support do in cgroup?
cgroup has 2 options for memory control:
memory.use_hierarchy = 1 : use hierarchy
memory.use_hierarchy = 0 : use flat hierarchy, according to this answer
What is the difference between the two? I ...
- 563
10
votes
1
answer
342
views
Diacritics do not work in GTK+ applications running on Mac OS X Snow Leopard
I am using some GTK+ applications in Mac OS X Snow Leopard. My MacBook is configured for using the Brazilian layout, which allows it to enter diacritics as dead keys (so I can write á typing ' and ...
- 2,884
10
votes
6
answers
39k
views
Ubuntu - Shutdown does not power-off (tried other solutions)
I noticed recently that shutting down my Linux (Ubuntu 20.04) desktop does not power it down once everything has come to a halt. It states Power down but the led is still glowing and the fan is still ...
- 261
10
votes
2
answers
2k
views
How to convert a pdf to 4-up in landscape mode (ideally using ghostscript)?
I have pdf slides in landscape mode and would like to create a new pdf file containing the slides 4-up (in landscape mode again) like this:
-----------------
| 1 | 2 |
-----------------
| 3 ...
- 480
9
votes
0
answers
271
views
Bash script containing sudo - unreliable background resume (bg)
I have the following simple bash script (called test.sh), that shows disk usage in the root dir. sudo is needed to list all directories (and I'm not asked for sudo password).
#!/bin/bash
sudo du -h --...
- 772
9
votes
1
answer
7k
views
How to run linux perf without root
I want to benchmark an application of mine. Up to now I used gnu time, but perf yields much better stats.
As a matter of principle I would like to go the route of a decicated perf user instead of ...
- 201
9
votes
0
answers
645
views
Make Btrfs use all CPUs for compression
I have been playing around with Btrfs and compression, but I have been unable to make Btrfs use all my CPU cores for compressing.
The kernel compression processes max out at 8 cores (all running >...
- 35.6k
9
votes
1
answer
4k
views
How can I make my ExFAT partition unmount cleanly?
I've got Raspbian running on a Raspberry Pi 4 B. I have a USB hard disk that I'm using with it. The hard disk is a 1TB drive formatted with a single partition using ExFAT. I've got exfat-fuse and ...
user403386
9
votes
0
answers
9k
views
ASUS Zenbook UX433/UX333 --- Configure Touchpad-embedded numpad on Linux
I have an ASUS Zenbook UX433,on which ASUS decided to innovate by embedding a Numpad inside the touchpad (see picture 1).
Toggling between classic touchpad mode and numpad (also turns the touchpad ...
- 221
9
votes
0
answers
2k
views
systemd-nspawn: how to allow access to all devices?
I'm trying to create a rough equivalent of Docker's --privileged in a systemd container, but I've got no idea how to allow the container to access all of the devices available on the host (without ...
- 161
9
votes
1
answer
2k
views
How can I find out what is making my SLAB Unreclaimable Memory Grow without bound
My SLAB unreclaimable memory (SUnreclaim) grows without bounds and this appears to be the reason why my system eventually runs out of RAM and starts trying to swap until it dies.
Here's a graph of my ...
- 131
9
votes
1
answer
846
views
Check syntax of .conf file in /etc/X11/xorg.conf.d
I have a new .conf file located in /etc/X11/xorg.conf.d on my Manjaro Linux box which I would like to validate.
Is there a way of syntax checking it before X loads next time?
- 30.5k
9
votes
0
answers
1k
views
Linux: Onscreen swipe keyboard
I injured my hand so that typing is now difficult. I have a touchscreen monitor on my laptop and am running Debian. Is there an on-screen keyboard which has swipe capabilities like the Google ...
- 440
9
votes
1
answer
10k
views
Why do the command cvt and gtf give different frequency values
I am trying to setup a xrandr mode line for a X display but in attempting to find the appropriate parameters, I note there are two different calculation programs (see below).
Why the difference in ...
- 6,854
9
votes
2
answers
683
views
rsync: compare directories with symlinks
There are various similar questions here, but I don't think any of them quite answer this.
I have a local directory (www) which has to be mirrored exactly on a remote server, and I need to confirm ...
- 211
9
votes
1
answer
2k
views
Incorrect automatic time zone
I've noticed that the automatic time zone detection functionality of my GNOME 3 (Arch Linux) is not working correctly. My actual time zone is PST (UTC-08), but if I toggle on the "Automatic Time ...
- 191
9
votes
2
answers
1k
views
xsel and xclip hang
My objective is to make a text on my remote machine (CentOS 7.2) available to seamlessly paste on my local machine (OS X 10.12.2) with the standard ⌘V shortcut. My setup connects to the remote ...
- 221
9
votes
1
answer
9k
views
Does gsettings have a GUI frontend?
There is dconf-editor for dconf, but dconf is a low-level configuration system and direct use of it is discouraged. Users are recommended to use gsettings instead, but I cannot find a GUI tool for it.
...
- 4,274
9
votes
1
answer
5k
views
Linux 3.x fails assigning PCI BAR memory
I got an IBM x3850 type 8864 machine, I can successfully boot using a 2.6.32 kernel but when I try to use a 3.10 kernel or newer the kernel fails to initialize all PCI slots (I can fix this (manually),...
- 91
9
votes
0
answers
1k
views
Sound playback over bluetooth lags
I followed the instructions on Arch Linux Wiki and managed to set up sound playback thorugh bluetooth. However, there is a serious lag when using A2DP profile. No problems when using the headset ...
- 191