LinuxTips17

Jul 1, 2024
Technology

1. liquorix kernel(zen)

Install on Ubuntu 22.04 via:

curl -s 'https://liquorix.net/install-liquorix.sh' | sudo bash

2. pikvm for x86

Tips(comment the brltty related items and reboot, then ttyUSB0 is avaiable):

sudo vim /usr/lib/udev/rules.d/85-brltty.rules
# ENV{PRODUCT}=="1a86/7523/*", ENV{BRLTTY_BRAILLE_DRIVER}="bm", GOTO="brltty_usb_run"
sudo systemctl mask brltty.path
sudo reboot

Change to ubuntu22.04 and solved the problem.

3. socket 5 proxy

Open the proxy via:

ssh -N -D 0.0.0.0:10000 dash@localhost

Then set the proxy in other machine for yum usage:

$ vim /etc/yum.conf
#proxy=socks5://10.23.119.200:10000

4. ubuntu22.04 curl issue

Problem:

OpenSSL Error messages: error:0A000126:SSL routines::unexpected eof while reading

solved via:

apt remove curl
apt purge curl
apt-get update
apt-get install -y libssl-dev autoconf libtool make
cd /usr/local/src
wget https://curl.haxx.se/download/curl-7.88.1.zip
unzip curl-7.88.1.zip
cd curl-7.88.1
./buildconf
./configure --with-ssl 
make
sudo make install
sudo cp /usr/local/bin/curl /usr/bin/curl
sudo ldconfig
curl -V

5. nix-shell install

install via:

nix-shell '<home-manager>' -A install --option substituters https://mirrors.ustc.edu.cn/nix-channels/store

6. Workingtips for nix on ubuntu

简单步骤:

curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh -s -- install
nix-channel --add https://github.com/nix-community/home-manager/archive/master.tar.gz home-manager
nix-channel --update
nix-shell '<home-manager>' -A install
nix run home-manager/master -- init --switch 
sudo apt install seatd
sudo usermod -a -G video $USER
reboot
nix profile install github:guibou/nixGL --impure
home-manager switch --option substituters https://mirrors.ustc.edu.cn/nix-channels/store
sudo apt-get install -y pipewire pipewire-pulse

Also edit the limitation of /etc/security/limits.conf, as following.

Modification for nix files:

$ vim ~/.config/home-manager/hyprland.nix
                monitor=,1920x1080@60,auto,1
......
             master {
                 # See https://wiki.hyprland.org/Configuring/Master-Layout/ for more
# new_is_master = true
                 new_status = slave
$ vim ~/.config/home-manager/flake.nix
    #hyprland.url = "github:hyprwm/Hyprland";
    hyprland.url = "git+https://github.com/hyprwm/Hyprland?submodules=1";

7. limitation linux

enlarge via:

 /etc/security/limits.conf, add

* soft nofile 1000001
* hard nofile 1000001

8. nix dconf issue

problem:

Activating dconfSettings
dbus[13416]: Failed to start message bus: Configuration file needs one or more <listen> elements giving addresses
dbus-run-session: EOF reading address from bus daemon

Solved via:

not solved, for centos's dbus is pretty old
### 9. pactrap archlinux
Can't Pacstrap because of "Corrupted" packages, solved via:

pacman -Sy archlinux-keyring sudo pacstrap -c /mnt base


### 10. nixos dhcpd issue
encounter following issue:

   Failed assertions:
   - The option definition `services.dhcpd4' in `/nix/store/yq5mkfx3b97iczs5a6lhjm14gkjx9795-source/configuration.nix' no longer has any effect; please remove it.
   The dhcpd4 module has been removed because ISC DHCP reached its end of life.
   See https://www.isc.org/blogs/isc-dhcp-eol/ for details.
   Please switch to a different implementation like kea or dnsmasq.

switch to new implementation:     

### 11. sybench rocklinux
Install via:

sudo yum install -y epel-release sudo yum install ./sysbench…..


### 12. x0vncserver
Using x0vncserver for replacing nxplayer:

$ sudo pacman -S tigervnc $ vncpasswd $ vim ~/.xprofile x0vncserver -rfbauth ~/.vnc/passwd &


### 13. git clone via socks proxy
temp using socks proxy via:

git -c “http.proxy=socks5h://127.0.0.1:21080” clone https://github.com/Limitex/ComfyUI-Diffusers.git


### 14. ignore ast kernel issue
issue:

W: Possible missing firmware /lib/firmware/ast_dp501_fw.bin for module ast

Solved via:

touch /lib/firmware/ast_dp501_fw.bin update-initramfs -u -k all


### 15. watch sync status
via:

watch -d grep -e Dirty: -e Writeback: /proc/meminfo


### 15. g++ update
via:

2019 sudo apt install -y g++-12 2020 ls -la /usr/bin | grep g++ 2021 sudo update-alternatives –install /usr/bin/g++ g++ /usr/bin/g++-11 10 2022 sudo update-alternatives –install /usr/bin/g++ g++ /usr/bin/g++-12 20 2023 sudo update-alternatives –install /usr/bin/c++ c++ /usr/bin/g++ 30


### 16. set default opener
Install:

perl-file-mimeinfo Or perl538Packages.FileMimeInfo

Select the default opener for jpeg:

mimeopen -d photo.jpeg


### 17. esxi usb nic
`https://avojak.com/blog/2024/01/17/installing-esxi-with-usb-nic/`, 参考。    



### 18. nixos citrix workspace
Download the tar file from citrix:

sudo nixos-rebuild switch –option substituers https://mirror.sjtu.edu.cn/nix-channels/store nix-prefetch-url file:///home/dash/Downloads/linuxx64-24.5.0.76.tar.gz sudo nixos-rebuild switch –option substituers https://mirror.sjtu.edu.cn/nix-channels/store


### 19. Run llama3.1
Steps:

curl -fsSL https://ollama.com/install.sh | sh ollama run llama3.1:8b


### 20. offline kubespray issues
Solved via:

tar xzvf ../off.tar.gz cd kubespray-offline-2.25.0-0/ cd outputs/ ./setup-container.sh && ./start-nginx.sh && ./setup-offline.sh && ./setup-py.sh && ./start-registry.sh && ./load-push-all-images.sh && ./extract-kubespray.sh cd kubespray-2.25.0/ cd inventory/ cp -r sample/ rong cd rong/ vim inventory.ini cd ../../ python3.11 -m venv ~/.venv/3.11 source ~/.venv/3.11/bin/activate pip install -U pip pip install -r requirements.txt cp ../../offline.yml inventory/rong/group_vars/all/offline.yml vim inventory/rong/group_vars/all/offline.yml cp ~/new/kubespray-offline-2.25.0-0/outputs/playbook/offline-repo.yml . cp -r ~/new/kubespray-offline-2.25.0-0/outputs/playbook/roles/offline-repo/ roles/ ansible-playbook -i inventory/rong/inventory.ini offline-repo.yml ansible-playbook -i inventory/rong/inventory.ini –become –become-user=root cluster.yml kubectl get nodes kubectl get po –all-namespaces vim /etc/systemd/resolved.conf reboot


### 21. grep in linux root
via:

grep -rli –exclude-dir={proc,boot,root,sys} ‘xmlns:qemu=’ /


### 22. one-kvm-docker
via:

docker run -itd -p443:443 -p80:80 –name pikvm-docker –device=/dev/ttyUSB0:/dev/kvmd-hid –device=/dev/video0:/dev/kvmd-video pikvm-ch9329:0.61


![/images/20240821_095332_x.jpg](/images/20240821_095332_x.jpg)

should use relative mouse.   

### 23. cowsay issue
issue:

cowsay: Could not find cowfile for ‘default.cow’!

Solved via:

$ vim ~/.zshrc export ZSH=/home/dash/.oh-my-zsh COWPATH=/usr/share/cowsay/cows

recreate the terminal, this time cowsay works properly.   

### 24. flux1-dev-bnb-nf4-v2
Steps:

models:
(base) dash@comfyvm:~/Code/ComfyUI/models/checkpoints$ mv ~/flux1-dev-bnb-nf4-v2.safetensors . (base) dash@comfyvm:~/Code/ComfyUI/models/checkpoints$ pwd /home/dash/Code/ComfyUI/models/checkpoint

Custom model:
(base) dash@comfyvm:~/Code/ComfyUI/custom_nodes$ mv ~/ComfyUI_bitsandbytes_NF4-master.zip . (base) dash@comfyvm:~/Code/ComfyUI/custom_nodes$ unzip ComfyUI_bitsandbytes_NF4-master.zip Archive: ComfyUI_bitsandbytes_NF4-master.zip 6c65152bc48b28fc44cec3aa44035a8eba400eb9 creating: ComfyUI_bitsandbytes_NF4-master/ inflating: ComfyUI_bitsandbytes_NF4-master/LICENSE.txt
inflating: ComfyUI_bitsandbytes_NF4-master/README.md
inflating: ComfyUI_bitsandbytes_NF4-master/init.py
extracting: ComfyUI_bitsandbytes_NF4-master/requirements.txt

$ conda activate comfyui (comfyui) dash@comfyvm:/opt/src/redsocks$ cd ~/Code/ComfyUI/ (comfyui) dash@comfyvm:~/Code/ComfyUI$ python -s -m pip install -U bitsandbytes

### 25. hygon win7
libvirt configuration:

<memballoon model='virtio'>
  <address type='pci' domain='0x0000' bus='0x03' slot='0x00' function='0x0'/>
</memballoon>

  <os>
    <type arch='x86_64' machine='pc-q35-8.2'>hvm</type>
    <boot dev='hd'/>
  </os>

hardware info:

root@idv-P860:~# lspci | grep -i vga
06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Lexa PRO [Radeon 540/540X/550/550X / RX 540X/550/550X] (rev c7)

win7, only in bios with Win7_hygon.iso, select q35. and install specified old win7 driver.

26. archlinux cn

Edit the /etc/pacman.conf:

[archlinuxcn]
Server = https://mirrors.tuna.tsinghua.edu.cn/archlinuxcn/$arch

Then:

$ sudo pacman -Sy archlinuxcn-keyring

27. bootrepair

via:

sudo add-apt-repository ppa:yannubuntu/boot-repair && sudo apt update
sudo apt install -y boot-repair && boot-repair

28. nvidia t4 qxl

Configuration items:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bfc1-08002be10318}
EnableMsHybrid 1
qxl: 
EnableMsHybrid 2
GridLicensedFeatures 7
AdapterType should be removed.

29. take screenshot

via:

xfce4-screenshooter  -f --display=:2 -s /tmp/test3_5.jpg

30. kernel-lt

Install via:


[root@cc-shhsh-x86-controller-1 ~]# yum --disablerepo="*" --enablerepo="elrepo-kernel" install kernel-lt
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
Resolving Dependencies
--> Running transaction check
---> Package kernel-lt.x86_64 0:5.4.278-1.el7.elrepo will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================================================================================================================================
 Package                                   Arch                                   Version                                                Repository                                     Size
=============================================================================================================================================================================================
Installing:
 kernel-lt                                 x86_64                                 5.4.278-1.el7.elrepo                                   elrepo-kernel                                  50 M

Transaction Summary
=============================================================================================================================================================================================
Install  1 Package

Total download size: 50 M
Installed size: 230 M
Is this ok [y/d/N]: y
Downloading packages:
kernel-lt-5.4.278-1.el7.elrepo.x86_64.rpm                                                                                                                             |  50 MB  00:00:01     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : kernel-lt-5.4.278-1.el7.elrepo.x86_64

Configure via:

[root@cc-shhsh-x86-controller-1 ~]# ls /boot/vmlinuz-5.4.278-1.el7.elrepo.x86_64 
/boot/vmlinuz-5.4.278-1.el7.elrepo.x86_64
[root@cc-shhsh-x86-controller-1 ~]# grubby --set-default /boot/vmlinuz-5.4.278-1.el7.elrepo.x86_64 
[root@cc-shhsh-x86-controller-1 ~]# grub2-mkconfig -o /boot/efi/EFI/
BOOT/   centos/ 
[root@cc-shhsh-x86-controller-1 ~]# grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-5.4.278-1.el7.elrepo.x86_64
Found initrd image: /boot/initramfs-5.4.278-1.el7.elrepo.x86_64.img
Found linux image: /boot/vmlinuz-4.19.12-7_rc1.zdyun.x86_64
Found initrd image: /boot/initramfs-4.19.12-7_rc1.zdyun.x86_64.img
Found linux image: /boot/vmlinuz-4.19.12-1.ctyun.x86_64
Found initrd image: /boot/initramfs-4.19.12-1.ctyun.x86_64.img
Found linux image: /boot/vmlinuz-3.10.0-957.el7.x86_64
Found initrd image: /boot/initramfs-3.10.0-957.el7.x86_64.img
Found linux image: /boot/vmlinuz-0-rescue-ad8ef31f6ef940a0b65f1f597ad06c3b
Found initrd image: /boot/initramfs-0-rescue-ad8ef31f6ef940a0b65f1f597ad06c3b.img
done
You have new mail in /var/mail/root/

31. lenovo bios issue

Install win7:

BIOS版本M31K开头的激活代码 AmiSetupWriter.efi 0x802 0x1 （CSM改为允许）
BIOS版本M31K开头的激活代码 AmiSetupWriter.efi 0x802 0x1 （CSM改为允许）
如果M31K开头的BIOS，独显为RTX 16系列和20系列输入以下三条命令
AmiSetupWriter.efi 0x808 0x0 
AmiSetupWriter.efi 0x80b 0x2
AmiSetupWriter.efi 0x80c 0x2

32. detectgpu fixed code

via:

# 1.7 remove pciroot related items
reserveid=`lspci | grep -i vga | awk -F ':' {'print $1'}`
prefixreserveid="0000:"$reserveid
echo "/^${prefixreserveid}/"'!d' > /tmp/sedcmd.txt
sed -i -f /tmp/sedcmd.txt /tmp/pciid
sed -i -f /tmp/sedcmd.txt /tmp/devicedriver

usermod -a -G kvm,libvirt idv
python3 -m pip install --upgrade pip -i https://pypi.tuna.tsinghua.edu.cn/simple
pip3 install pyqt5==5.15.2 -i https://pypi.tuna.tsinghua.edu.cn/simple
python3 -c "from PyQt5.Qt import PYQT_VERSION_STR; print(PYQT_VERSION_STR)"

34. macos usage

via:

test@tests-iMac-Pro-2 ~ % sysctl -n hw.ncpu

14
test@tests-iMac-Pro-2 ~ % sysctl hw.memsize | awk '{print $1/1073741824}'

0
test@tests-iMac-Pro-2 ~ % sysctl hw.memsize
hw.memsize: 24775753728
test@tests-iMac-Pro-2 ~ % sysctl hw.memsize | awk '{print $2/1073741824}'

23.0742

35. fh vfio items

Change vfio hooks via:

vfio-startup.sh:

systemctl stop graphical.target
sleep 3
systemctl stop gdm
sleep 3 
systemctl stop gdm3
sleep 3
killall --user idv
sleep 5
echo 0x1ec8 0x9810 | tee -a /sys/bus/pci/drivers/vfio-pci/new_id 
sleep 2
echo "End of startup!"

vfio-teardown.sh:

sleep 3
echo 0x1ec8 0x9810 > /sys/bus/pci/drivers/vfio-pci/remove_id 
sleep 1
echo 1 > /sys/bus/pci/devices/0000\:06\:00.0/remove 
sleep 3
echo 1 > /sys/bus/pci/rescan 
sleep 3
systemctl start gdm

echo "End of teardown!"

36. cuttlefish building

Building deb:

git clone https://github.com/google/android-cuttlefish
cd android-cuttlefish
tools/buildutils/build_packages.sh 
$ ls *.deb
cuttlefish-base_1.0.0_arm64.deb         cuttlefish-orchestration_1.0.0_arm64.deb
cuttlefish-common_1.0.0_arm64.deb       cuttlefish-user_1.0.0_arm64.deb
cuttlefish-integration_1.0.0_arm64.deb

Install deb:

sudo dpkg -i ./cuttlefish-base_*_*64.deb || sudo apt-get install -f
sudo dpkg -i ./cuttlefish-user_*_*64.deb || sudo apt-get install -f
sudo usermod -aG kvm,cvdnetwork,render $USER
sudo reboot

getprop:

dumpsys SurfaceFlinger | grep GLES
 ------------RE GLES------------

37. secure boot off

via:

<loader readonly='yes' secure='no' type='pflash'>/usr/share/OVMF/OVMF_CODE.fd</loader>
    <nvram>/var/lib/libvirt/qemu/nvram/centos-4.19-3_VARS.fd</nvram>

38. ubuntuOK

via:

  HOME=$PWD ./bin/launch_cvd  -gpu_mode  drm_virgl  -enable_gpu_udmabuf -cpus 4 -memory_mb  8192

39. update gcc in debian unstable

via:

sudo apt install -y gcc-12
sudo apt install g++-12
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-12 10
sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-14 20
sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-12 10
sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-14 20
sudo update-alternatives --install /usr/bin/cc cc /usr/bin/gcc 30
sudo update-alternatives --set /usr/bin/gcc
sudo update-alternatives --set cc /usr/bin/gcc
sudo update-alternatives --install /usr/bin/c++ c++ /usr/bin/g++ 30
sudo update-alternatives --set c++ /usr/bin/g++
sudo update-alternatives --config gcc
sudo update-alternatives --config g++

40. build gfxstream on ubuntu2204

problems:

test@ubuntu2204:~/Code/qemu/build/deps/gfxstream$ meson setup -Ddefault_library=static --prefix "${PREFIX}" build/ 
The Meson build system
Version: 0.61.2
Source dir: /home/test/Code/qemu/build/deps/gfxstream
Build dir: /home/test/Code/qemu/build/deps/gfxstream/build
Build type: native build
Project name: gfxstream
Project version: 0.1.2
C compiler for the host machine: cc (gcc 11.4.0 "cc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0")
C linker for the host machine: cc ld.bfd 2.38
C++ compiler for the host machine: c++ (gcc 11.4.0 "c++ (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0")
C++ linker for the host machine: c++ ld.bfd 2.38
Host machine cpu family: x86_64
Host machine cpu: x86_64
Program python3 found: YES (/usr/bin/python3)
WARNING: Python files installed by Meson might not be found by python interpreter.
 This warning can be avoided by setting "python.platlibdir" option.
WARNING: Python files installed by Meson might not be found by python interpreter.
 This warning can be avoided by setting "python.purelibdir" option.
Found pkg-config: /usr/bin/pkg-config (0.29.2)
Run-time dependency aemu_base found: YES 0.1.2
Run-time dependency aemu_host_common found: YES 0.1.2
Run-time dependency aemu_logging found: YES 0.1.2
Run-time dependency aemu_snapshot found: YES 0.1.2
Found CMake: /usr/bin/cmake (3.22.1)
Run-time dependency dl found: NO (tried pkgconfig and cmake)

host/meson.build:78:2: ERROR: Dependency "dl" not found, tried pkgconfig and cmake

41. problem solving with policykit

building issue:

terminal 1: 
$ echo $??
23783
$ pkttyagent --process 23783
Authentication is needed to run `/usr/bin/python3' as the super user
Authenticating as: test
Password: 
==== AUTHENTICATION COMPLETE ===
==== AUTHENTICATING FOR org.freedesktop.policykit.exec ===
Authentication is needed to run `/usr/bin/python3' as the super user
Authenticating as: test
Password: 
==== AUTHENTICATION COMPLETE ===

42. qemu-kvm-ev installation

Steps:

sudo sed -i.bak   -e 's|^mirrorlist=|#mirrorlist=|g'   -e 's|^#baseurl=http://mirror.centos.org/centos|baseurl=https://mirrors.ustc.edu.cn/centos-vault/centos|g'   /etc/yum.repos.d/CentOS-Base.repo
sudo yum update
sudo yum install -y virt-manager
sudo yum install -y centos-release-qemu-ev
sudo vi /etc/yum.repos.d/CentOS-QEMU-EV.repo
...
baseurl=http://mirrors.ustc.edu.cn/centos-vault/centos/$releasever/virt/$basearch/kvm-common/
...
sudo yum makecache
sudo yum install -y qemu-kvm-ev

elrepo:

$ cat /etc/yum.repos.d/elrepo.repo
...
[elrepo-kernel]
name=ELRepo.org Community Enterprise Linux Kernel Repository - el7
#baseurl=http://elrepo.org/linux/kernel/el7/$basearch/
baseurl=https://mirrors.ustc.edu.cn/elrepo/archive/kernel/el7/$basearch/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.org
protect=0
...
$ sudo yum makecache
$ sudo yum install -y kernel-lt kernel-lt-devel kernel-lt-headers

Create building kernel docker instance:

$ sudo docker run -it buidrockykernel:latest /bin/bash
[root@6daba91116b7 /]# useradd -m mockbuild
[root@6daba91116b7 /]# su - mockbuild

In building container:

wget https://elrepo.reloumirrors.net/kernel/el9/SRPMS/kernel-lt-6.1.112-1.el9.elrepo.nosrc.rpm
rpm -Uvh kernel-lt-6.1.112-1.el9.elrepo.nosrc.rpm 
cd rpmbuild/
cd SPECS/
vim kernel-lt-6.1.spec 
cd ../SOURCES/
wget https://mirrors.ustc.edu.cn/kernel.org/linux/kernel/v6.x/linux-6.1.112.tar.xz
cd ../SPECS/
time rpmbuild -ba kernel-lt-6.1.spec

44. lxd to incus

via:

lxd-to-incus --ignore-version-check

45. find installed gpus

via:

 lspci -nn | grep -i -E 'VGA|Display|3d' | grep -i -v "intel"

remove grub default items:

cp -r /etc/default/grub.d/ /root
vim *.cfg  # remove all of the unnecessary items

remove all of the dkms:

mv /usr/src /root
mkdir -p /root/varlibdkms
mv /var/lib/dkms/* /root/varlibdkms

/usr/lib/dkms/dkms_autoinstaller start 5.4.0-100-generic

47. oneline dkms

via:

ls /boot/initrd.img-* | cut -d- -f2- | \
    sudo xargs -n1 /usr/lib/dkms/dkms_autoinstaller start

48. pve lxc download

tips:

# pveam update
# pveam available
# pveam download local ubuntu-22.04-standard_22.04-1_amd64.tar.zst
downloading http://download.proxmox.com/images/system/ubuntu-22.04-standard_22.04-1_amd64.tar.zst to /var/lib/vz/template/cache/ubuntu-22.04-standard_22.04-1_amd64.tar.zst

template:

root@pve:/var/lib/vz/template/cache# scp ubuntu-22.04-standard_22.04-1_amd64.tar.zst dash@192.168.1.7:/media/big/

via:

  188  sudo lxc-create -n ubuntu2204 -t download -- --dist ubuntu --release jammy --arch amd64

50. disable apparmor

via:

root@debianonlyroot:~# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-6.1.0-25-amd64 root=UUID=d96e2a44-3ce5-4a4a-899a-0e47f1ad3e50 ro quiet ipv6.disable=1 apparmor=0
root@debianonlyroot:~# cat /sys/module/apparmor/parameters/enabled
N
root@debianonlyroot:~# aa-status
apparmor module is loaded.
apparmor filesystem is not mounted.
root@debianonlyroot:~#

disable steps:

$ sudo mkdir -p /etc/default/grub.d
$ echo 'GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT apparmor=0"' \
  | sudo tee /etc/default/grub.d/apparmor.cfg
$ sudo update-grub
$ sudo reboot

51. fedora arm64 group

steps:

lvextend -l +100%FREE /dev/mapper/fedora-root
xfs_growfs /dev/fedora/root

52. view sync status

via:

watch -d grep -e Dirty: -e Writeback: /proc/meminfo

/images/20241024_181125_x.jpg

53. Installation issue(ubuntu16.04)

Change the virtio to scsci disk, for arm64 installation.

54. lxc startup issue

problem:

Failed to mount cgroup at /sys/fs/cgroup/systemd: Operation not permitted

solved via:

Added cgroup parameter to boot cmdline:     
systemd.unified_cgroup_hierarchy=0
update-grub2 && reboot

55. kylin lightdm

configuration via:

# cat /etc/lightdm/lightdm.conf
[LightDM]
minimum-vt=8
[SeatDefaults]
autologin-guest=false
autologin-user=test
autologin-user-timeout=0

56. ubuntu startup

solved via:

test@server:~$ cat /etc/systemd/system/network-online.target.wants/systemd-networkd-wait-online.service
[Service]
Type=oneshot
ExecStart=/usr/lib/systemd/systemd-networkd-wait-online
RemainAfterExit=yes
TimeoutStartSec=2sec

[Install]
WantedBy=network-online.target
=======

57. lxc sound issue

solved via:

/usr/bin/pactl load-module module-alsa-card device_id=1 ; /usr/bin/pactl load-module module-alsa-card device_id=0

58. fedora autoload kernel module

via:

# vim /etc/modules-load.d/vfio.conf
vfio-pci
vfio_iommu_type1
vfio_pci
# systemctl status systemd-modules-load.service

59. git diff

steps:

1. get the source code
git init
git add .
git commit -m 'initial'
git tag -a initial HEAD -m "initial"
2. make changes
git add 
git commit -m 'second'
git tag -a second HEAD -m "second"
3. show tags
git tag
4. make diffs
git diff -p tag1 tag2 > my.patch

60. ltsp on zkfd

solved via:

  105  mount --bind / /mnt
  106  ls /mnt
  107  cp -a /boot/. /mnt/boot/
  108  umount /mnt
  109  ltsp image /

61. force overwrite

apt when conflicts:

-o Dpkg::Options::="--force-overwrite"

62. dkms issue

solved via:

$ sudo vim /etc/kernel/postinst.d/dkms
# We're passed the version of the kernel being installed
inst_kern=$1

+if [ "$1" = "5.4.xxxxxx" ]; then
uname_s=$(uname -s)

......

    echo "      please install the $header_pkg package to fix this." >&2
fi
+else
+	echo "fucku"
+	exit
+fi

63. drblpush push

solved via:

apt remove thunderbird --purge && drblpush -c /etc/drbl/drblpush.conf

64. virsh attach device

via:

root@zkfd:/home/test# virsh attach-device win10 --file usb.xml --current
成功附加设备

root@zkfd:/home/test# cat usb.xml 
  <hostdev mode='subsystem' type='usb' managed='yes'>
      <source>
        <vendor id='0x30fa'/>
        <product id='0x0300'/>
      </source>
    </hostdev>

65. pip config edit

solved via:

$ export EDITOR=vim
$ pip config edit
$ pip config list
global.index-url='https://pypi.mirrors.ustc.edu.cn/simple'

很惭愧，就做了一点微小的工作

LinuxTips17

1. liquorix kernel(zen)

2. pikvm for x86

3. socket 5 proxy

4. ubuntu22.04 curl issue

5. nix-shell install

6. Workingtips for nix on ubuntu

7. limitation linux

8. nix dconf issue

26. archlinux cn

27. bootrepair

28. nvidia t4 qxl

29. take screenshot

30. kernel-lt

31. lenovo bios issue

32. detectgpu fixed code

33. pyqt related

34. macos usage

35. fh vfio items

36. cuttlefish building

37. secure boot off

38. ubuntuOK

39. update gcc in debian unstable

40. build gfxstream on ubuntu2204

41. problem solving with policykit

42. qemu-kvm-ev installation

43. elrepo related building

44. lxd to incus

45. find installed gpus

46. zkfd related

47. oneline dkms

48. pve lxc download

49. pure lxc related

50. disable apparmor

51. fedora arm64 group

52. view sync status

53. Installation issue(ubuntu16.04)

54. lxc startup issue

55. kylin lightdm

56. ubuntu startup

57. lxc sound issue

58. fedora autoload kernel module

59. git diff

60. ltsp on zkfd

61. force overwrite

62. dkms issue

63. drblpush push

64. virsh attach device

65. pip config edit