Newest Questions
245,827 questions
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On Ubuntu 26.04 Desktop how to lock Firefox version?
On Ubuntu 26.04 Desktop how to lock Firefox version,
that is to disable Firefox automatic updates,
so that Firefox version stays the same known version?
--
P.S. Thanks to SO suggestions
I have seen
...
1
vote
1
answer
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How does the Linux kernel distinguish between a page fault caused by a bad user pointer vs a kernel bug when both occur in Ring 0?
I understand that when a page fault occurs in user space
(Ring 3), the fault handler can read the saved CS register
from pt_regs to confirm CPL=3, then send SIGSEGV to the
process and keep the kernel ...
0
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answers
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GRUB offers to start on current (C) or previous (P) image. What if, being on a P session, I recreate an image C'? Will it offer C' and P or C' and C?
I'm facing a trouble that prevents my computer from starting on an 6.12.85-1 image.
So I'm back on GRUB previous on the 6.12.74-2 one.
I'm waiting, hoping for a patch coming, to do a new attempt.
In a ...
- 2,749
0
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9
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systemd service is seemingly not running after mount unit exits
I am using systemd 249.x on Ubuntu 22.04. I have systemd service unit that is supposed to run when a mount unit stops in order to delete the mount point that the aforementioned mount unit ...
- 4,588
0
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e1000e PHY reports “NIC Link is Up” repeatedly but carrier immediately dropped by driver
I'm experiencing a networking issue on Debian testing where my Intel Ethernet controller keeps dropping the carrier state immediately after the PHY reports a link-up. The same hardware works perfectly ...
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10
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Long execution time for mdadm v4.4 "--examine" on Rocky9
After upgrade of "mdadm" from v4.3 to v4.4 I've been experiencing very long execution times for the command "mdadm --examine /dev/<cloud_disk>".
v4.3 - ~0.1s
v4.4 - ~12s
Is ...
2
votes
2
answers
125
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dist-update installs 6.12.85+deb13+1-amd64 (on 6.12.74 ?!) of Debian 13. GNOME fails on "munmap_chunk(): invalid pointer" at reboot → black screen
I'm running a trixie main contrib non-free non-free-firmware.
Context : 6.12.74+deb13+1-amd64 to 6.12.85+deb13-amd64
An update, upgrade, dist-upgrade have changed my 6.12.74+deb13+1-amd64 to 6.12.85+...
- 2,749
8
votes
1
answer
98
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POSIX: Regular Expression: "\(a\(b\)*\)*\2" matches "abab"
According to chapter 9. Regular Expressions, subchapter 9.3.6 BREs Matching Multiple Characters, number "3.": "... the expression "\(a\(b\)*\)*\2" fails to match 'abab' ...&...
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systemd says "Dependency failed"; which dependency?
I have some mount units that are failing. systemctl status <insert unit name> just says Dependency failed. How do I find out which dependency failed? I don't even know what "dependency"...
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2
votes
1
answer
57
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why cant pgid (process group leader)cant change its pgid?
Why is it that a Process Group Leader can't change its PGID? I know it sounds dumb for a leader to just abandon its own group, but what is the actual architectural reason behind this? What would ...
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0
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30
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Why does Debian 13 show "Starting …" repeatedly during shutdown?
This is a picture of when I shut down my laptop - Debian 13 on decent hardware, KDE desktop. I don't have any other problem, but whenever I shut it down, I see something like this picture; text starts ...
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87
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Readonly Ubuntu 26.04 Desktop with browser
As part of the system, but also for testing, Readonly Ubuntu 26.04 Desktop image is needed:
That is pre-installed runnable VM (free and open source, official),
ideally AWS-ready, or already available ...
0
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2
answers
45
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nftables: How to skip chains that don't match specific interfaces?
I am working on creating an airgapped wireless access point on my server using nftables and per instructions from ChatGPT, I came up with these files:
01-airgap_ap.nft:
#!/usr/sbin/nft -f
## MASTER ...
0
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1
answer
32
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Encountering emergency shell after installation of rhel9 using kickstart
I am new to linux kickstart development and I am encountering with emergency shell .
Here is the scenario :
The installation process is smooth but after installation when system boots up sometimes I ...
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Running two Wayland compositors side by side, controlling different hardware
My PC has the following hardware:
A processor with an integrated GPU (/dev/dri/card1)
A discrete graphics card (/dev/dri/card0)
A monitor, keyboard and mouse, all connected directly to the ...
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