[Howto] mount ANDROID tablet / phone in linux
situation:newer ANDROID devices doesn’t support USB mass-storage for file-transfer – you have to use the MTP (= Media Transfer Protocol) solution:1) install jmtpfs-package, e.g. apt-get install jmtpfs2) connect your ANDROID device via USB cable and set the connection in ANDROID-popup … Continued
[Howto] solve “/usr/bin/xdg-open: 811: Permission denied”
problem:the default program corresponding to the file is not set. solution:check if your ~/.local/share/applications/<default-program>.desktop-file contains the MIME-type of your file. It must contain the MIME-type of your file. example: mplayer.desktop with MIME-type containing video/mp4 set the default-program ‘mplayer’ for MIME-type … Continued
[Howto] solve Raspberry Pi + YouTube “if playback doesn’t begin shortly, try restarting your device”
reason:pulseaudio is broken and blocks video playback temporary solution:restart pulseaudio with pulseaudio -k and retry video playback. it should play. permanent solution:1) install pipewire-pulse2) enable and start pipewire with systemctl –user start pipewire-pulse.service pipewire-pulse.socket and systemctl –user enable pipewire-pulse.service pipewire-pulse.socket3) … Continued
[Howto] print pdf annotations/textmarker in evince
evince-45.0 1. open the pdf-file with external editor 2. replace all strings /Subtype /Highlight /QuadPoints with /Subtype /Highlight /F 4 /QuadPoints (/F 4 sets the print-flag: “If set, print the annotation when the page is printed”) 3. save the modified … Continued
[FAQ] difference between SATA power modes (active, idle, standby, sleep)
source: SATA Power Management: It’s Good to Be Green (April 08, 2009) The ATA8-ACS standard describes four modes of power consumption for SATA products: ActiveThe device is fully powered up and ready to send/receive data. IdleThe device is capable of … Continued
[Howto] update the ZFS bootcode after zfs-update
problem:you can’t boot from zfs-boot, because of a version mismatch between old bootloader-code and upgraded zfs-version. ZFS: unsupported feature: com.delphix:head_errlogZFS: pool ‘foo’ is not supported Can’t find /boot/zfsloaderCant’ find /boot/loader reason:you have upgraded your bootable zpool to a new zfs-version … Continued
[Howto] AMD Tahiti R9 GPU – no supported hardware video decoding profiles (vaapi / vdpau)
OS: Debian trixie (v13) Linux Kernel: 6.4.11-1 x86/64 problem: vainfo returns only VAProfileNone : VAEntrypointVideoProc and all other decoding profiles are “not supported”. solution: use the amdgpu driver (and not the radeon driver) for AMD Southern Island (SI)-Chips: add radeon.si_support=0 … Continued
[SSH] auto disconnect after login attempt
version:OpenSSH 9.0p1 command:ssh -v <server> error message:Authenticated to <server> ([<ip-adress>]:<port>) using “publickey”.debug1: channel 0: new [client-session]debug1: Requesting no-more-sessions@openssh.comdebug1: Entering interactive session.<…>debug1: client_input_channel_req: channel 0 rtype exit-signal reply 0debug1: client_input_channel_req: channel 0 rtype eow@openssh.com reply 0debug1: channel 0: free: client-session, nchannels … Continued
[SAMBA] Can’t locate JSON.pm in @INC
version:samba-4.17.1error message:Can’t locate JSON.pm in @INC (you may need to install the JSON module) solution:install the JSON-module in PERLexecute following command as root: cpan JSON
[FreeBSD] zfs: out of temporary buffer space
system: FreeBSD v13.0-p7 reason: the bootloader is broken (e.g. after update) solution: reinstall the bootloader(s) to your boot disk(s) example: zroot (2-disk zfs-mirror with GPT partition tables) download a bootable FreeBSD-Image(e.g. FreeBSD-13.0-RELEASE-amd64-memstick.img) copy the image-file to a USB-stick (attention: all … Continued