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Questions about Linux kernel and Linux kernel related topics eg. implementation details such as system calls, kernel customization, etc. For Linux user space topics which do not involve kernel details, [linux] or distribution tag are more suitable.

6
votes
1answer
I would like to see with what parameters the running kernel has been started. i.e., I mean those parameters that are specified with the append option, such as ipv6.disable=1 or rootfstype=ext2 Is the …
asked Apr 15 '14 by Martin Vegter
3
votes
1answer
I have noticed in kernel 3.10, there is an option CONFIG_RTC_SYSTOHC Device Drivers -> RTC -> Set the RTC time based on NTP synchronization The help says: If you say yes here, the system time (wal …
asked Aug 21 '13 by Martin Vegter
4
votes
1answer
I am compiling my own kernel (4.4.x) on Debian Stretch, and I want to include the firmware for my radeon graphics card in the kernel, so that it does not need to be loaded from userspace. CONFIG_FIR …
asked Sep 9 '17 by Martin Vegter
4
votes
1answer
I had the driver for my sound card compiled as module, i.e.: CONFIG_SND_HDA_INTEL=m and I did pass following options to the module (via /etc/modprobe.d/alsa-base.conf): options snd-hda-intel enabl …
asked Sep 25 '14 by Martin Vegter
7
votes
1answer
Thanks to the answers to my other question, I now understand that FIFO on Linux, i.e. /dev/xconsole has a buffer limit of 64 KB. How can I increase this limit to 128 KB? Apparently, I will need to r …
asked Sep 14 '15 by Martin Vegter
3
votes
1answer
I am compiling linux kernel on Debian Stretch: cd linux-4.9.59/ make menuconfig make so far so good. normally, I would then issue make modules_install, to copy the modules to /lib/modules/. But t …
asked Oct 28 '17 by Martin Vegter
10
votes
1answer
Suppose, I have a system without X server. I can only log in from the console. It seems, by default linux console supports only 8 colors: # tput colors 8 Is it possible to use 256 colors in the con …
asked Jan 9 '16 by Martin Vegter
3
votes
2answers
Lets say my userspace (packages) are compiled with gcc 4.7 and libc6 2.13 (Debian Wheezy) Can I compile linux kernel under different dev environment, such as gcc 6.3 and libc6 2.24 (ie, under Debian …
asked Oct 19 '17 by Martin Vegter
1
vote
2answers
In the linux kernel, there is a section "Library routines" with a snippet shown below: Library routines ---> <M> CRC-CCITT functions <M> CRC ITU-T V.41 functions <M> CRC7 functions <M> CRC3 …
asked May 25 '14 by Martin Vegter
4
votes
1answer
When in console (i.e. not in Gnome or KDE) the display will automatically power down in case of inactivity. It seems to me to be set to something around 30 minutes. This power management is completely …
asked Oct 5 '14 by Martin Vegter
1
vote
1answer
on my laptop, when I do ifup wlan0, sometimes I get following call trace in dmesg. Other times, the log looks perfectly normal, and there are no kernel Oops messages. In both cases (with errors and w …
asked Nov 12 '14 by Martin Vegter
10
votes
2answers
I understand the definition of fileless malware: Malicious code that is not file based but exists in memory only… More particularly, fileless malicious code … appends itself to an active proce …
asked Jun 21 '17 by Martin Vegter
18
votes
1answer
My server has two 1-Gbit and two 10-Gbit onboard network cards. I need to disable the 1-Gbit network cards completely, so that ifconfig -a does not show them. The network cards use different kernel …
asked Sep 10 '18 by Martin Vegter
5
votes
1answer
Is it possible to use kernel cryptographic functions in the userspace? Let's say, I don't have md5sum binary installed on my system, but my kernel has md5sum support. Can I use the kernel function fro …
asked Oct 4 '13 by Martin Vegter
2
votes
1answer
After I have compiled my kernel, and when I type make modules_install, not only are the modules copied into /lib/modules/ but also firmware is copied into /lib/firmware/. The following is the end of t …
asked May 21 '14 by Martin Vegter

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