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I'm tryning to install Ubuntu 20.04 LTS on a micro SD Card as described above. But I am getting this error message:

XDG_URNTIME_DIR (/run/user/999) is owned by us (uid 0), but by uid 999! (This could e.g. happen if you try to connect to a non-root PulseAudio as a root user, over the native protocol. Don't to that.)

Also the benchmark of the disk is not delivering the desired Read/Write rate, being around 17/8 MBs R/W, I would like to know if this is a physical limitation of the card reader, a drive or Bios energy device control problem, like acpi or a problem with the card meaning it's damaged or not being an original sandisk.

Andre GolFe
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  • Have you tried booting the card in a different computer? You could try installing using an image file, not much can go wrong there. – C.S.Cameron Oct 20 '20 at 06:00

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Creating a Full install Ubuntu SD card from a Pre-built Image File.

If working in Windows:

(Password is "changeme", change it),

The SD card should boot on almost any modern X86-64 computer.

Thanks to sudodus for the image file.

In Windows it may be necessary to install 7Zip before proceeding. Rufus will use it when working with the .xz image: https://www.7-zip.org/a/7z1900-x64.exe

If working in Ubuntu: you can use mkusb, Disks or Etcher to flash the SD card. P7zzip may be needed to extract the image.

C.S.Cameron
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  • Hello, thank you so much for this solution, haven't tried it out yet. Shouldn't the speed limit of the sd card affect the performance of the system? I think is mostly due my card reader which I think doesn't support UHS - l – Andre GolFe Oct 20 '20 at 22:24
  • My understanding is that Ubuntu will mainly run in RAM if the computer has enough RAM. In that case the read/write speed at startup or when saving data. – C.S.Cameron Oct 21 '20 at 01:11
  • @C. S. Cameron, Should I be worried about wearing out my sd card using it for this? I'm between this solution and making a persistent live session on a 16GB pen drive, as a more experienced user, what would you suggest? I also want to use half of the card storage for Windows installed in other volume. – Andre GolFe Oct 21 '20 at 17:36
  • @Andre Gomes Ferreira de Olivei: See https://askubuntu.com/questions/588035/lifespan-a-flash-drive-running-ubuntu Note that nowadays they have been adding more layers in order to increase speed and reduce costs. They say that this also reduces endurance and life time. However consider that SD cards used in security cameras endure continuous writes for long periods of time. Even a Full install USB does not spend that much of it's time writing. – C.S.Cameron Oct 22 '20 at 01:30
  • Hello, again. Hey, it didnt work :/ seems like my card has a mbr partition and this cant be changed, when I check the partition on gparted its says the GPT partition is corrupted, but the primary is ok, besides it doesnt show up in Bios device manager. – Andre GolFe Oct 22 '20 at 19:28