[PLUG] dev fs and permission problem

Derek Loree derek at infotects.com
Tue Sep 10 23:27:26 UTC 2002


On Tue, 2002-09-10 at 15:20, Rogan Creswick wrote:
>  Since flashing my BIOS last week (Tyan Tiger MPX mobo) I have had problems
>  with permissions on various devices. /dev/dsp, /dev/mixer, and /dev/ttyS1
>  at the least have had their permissions changed, such that a normal user
>  can no longer make use of them. (/dev/ttyS1 has all rx perms, but no one can
>  write to it, the others I would have to reboot to check).

I'm having a hard time imagining how a BIOS flash (a hardware change)
would change the permissions of device files (a software change), what
else has changed on the system?  
> 
>  This is easily fixed with a chmod, however since I am using the
>  dev file system they revert to the undesired state when I reboot. Rather
>  than write a script to reset them at each boot I'd like to know how to
>  "correctly" fix the problem.

If nothing else has changed, then my guess would be that the kernel
needs to be recompiled, but it is just a guess.

Good Luck

Derek Loree





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