[Bug 1769848] Re: wodim no longer works from non-root accounts

[John Zaitseff]

The number of bytes being mmap()ed (12587008 bytes) may well be set in
/etc/wodim.conf, where the following line appears by default:

CDR_FIFOSIZE=12m

Commenting out this line seems to solve the immediate problem, as only
8192 bytes are now mmap()ed--but I have not tested it with a read CD-R
disc, as it seems to me that an 8kB FIFO buffer is a bit small!

After some testing (without any blank CD-Rs), it seems that
CDR_FIFOSIZE=7788k works, but 7789k does not.  I don't have anything
that looks relevant in /etc/sysctl.conf or /etc/sysctl.d/*.

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https://bugs.launchpad.net/bugs/1769848

Title:
  wodim no longer works from non-root accounts

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