> regarding 4/4 what should I replace "XXXX0000" in order to run the cat command?
You should not replace it; on laptop models which are actually affected by this bug there is actually a directory path containing "XXXX0000", if you get a no such file or directory error then your laptop model is not affected by this issue.
@petterip:
> regarding 3/4 where exactly should I add the "pci=nocrs"
You should add this to the kernel commandline, see: /wiki.ubuntu. com/Kernel/ KernelBootParam eters
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> regarding 4/4 what should I replace "XXXX0000" in order to run the cat command?
You should not replace it; on laptop models which are actually affected by this bug there is actually a directory path containing "XXXX0000", if you get a no such file or directory error then your laptop model is not affected by this issue.