[Bug 588262] Re: Can't burn ISO images.

[D. Hugh Redelmeier]

This but persists: it is in 12.04 LTS with all current updates applied.

There are several problems.  The first one is that K3b incorrectly
reports the problem.  wodim fails with an I/O error, well into burning:

Track 01: 10 of 625 MB written (fifo 100%) [buf 91%] 10.2x.
Errno: 5 (Input/output error), write_g1 scsi sendcmd: no error

Very clearly this isn't a permission problem.

In my case, I was able to figure out that the problem was that on-the-
fly collection of files from an external disk was not fast enough to
keep the burner running at full speed.  A buffer underrun is very bad
for burning.

I avoided the problem in either of two ways: lowering the burn speed, or
preparing an ISO image before burning (just one tick box in K3b's burn
screen, but it requires a lot of tempfile space).

Summary: K3b must understand wodim's diagnostics better and must report
them correctly and accurately to the user.  The current K3b diagnostic
is highly misleading.

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https://bugs.launchpad.net/bugs/588262

Title:
  Can't burn ISO  images.

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