Messages in this thread | | | Date | Fri, 15 Jun 2007 19:30:51 -0400 | From | Phillip Susi <> | Subject | Re: PC speaker |
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Jan Engelhardt wrote: > On Jun 15 2007 13:07, Phillip Susi wrote: >> R.F. Burns wrote: >>> However, over the past several weeks, the students have found more >>> creative ways to abuse the PC speaker (outside of the OS.) The Powers >>> that Be are asking that the PC speakers be disabled completely. With >>> the small number of techs we have, it would be very impractical to go >>> around to all systems and remove the PC speaker from each and every >>> computer case. >> Now I am curious; how are they getting the pc speaker to make any sound with >> the kernel module disabled? > > ioperm(), inb(), and outb() from userspace. Needs root, though. Or > /dev/port, with write. Which comes to the question how they gained root. > Perhaps live cd? In which case, the OP should, as recommended in this > thread already, deactivate choosing boot devices, if that's possible. > > (Unfortunately, newer BIOSes with 'integrated bootmenu' with F8 or so, > but I have not seen a way to deactivate _that_ menu.)
He already said they don't have root access and that allowed him to stop them from accessing the sound card by setting appropriate permissions.
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