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Bug 2853

Summary:	CD/DVD media not detected unless "udisksctl status" is run
Product:	TDE	Reporter:	linux
Component:	tdelibs	Assignee:	Timothy Pearson <kb9vqf>
Status:	RESOLVED NOTOURPROBLEM
Severity:	normal	CC:	bugwatch, linux
Priority:	P5
Version:	R14.0.x [Trinity]
Hardware:	Other
OS:	Linux
Compiler Version:		TDE Version String:
Application Version:		Application Name:

Description linux 2018-01-02 02:14:00 CST

Since upgrade from Debian 8 to Debian 9 (using TDE 14.0.5), CD/DVD media is not detected. When I run "udisksctl status" command from a shell, the media is detected immediately. This problem probably also causes K3b problems detecting media.

Comment 1 linux 2018-01-29 02:53:36 CST

Looks like a Debian bug.
$ cat /sys/module/block/parameters/events_dfl_poll_msecs
0

Seems that this udev rule in 60-block.rules is never executed:

# enable in-kernel media-presence polling
ACTION=="add", SUBSYSTEM=="module", KERNEL=="block", ATTR{parameters/events_dfl_poll_msecs}=="0", \
  ATTR{parameters/events_dfl_poll_msecs}="2000"

Probably because there's no "block" module at least in Debian 4.9 kernel:
$ uname -a
Linux test 4.9.0-5-amd64 #1 SMP Debian 4.9.65-3+deb9u2 (2018-01-04) x86_64 GNU/Linux
$ lsmod | grep block
$

$ uname -a
Linux omega 4.9.0-5-686-pae #1 SMP Debian 4.9.65-3+deb9u2 (2018-01-04) i686 GNU/Linux
$ lsmod | grep block
$

(running sysvinit-core)

Adding this to /etc/rc.local fixes the problem:
echo 2000 >/sys/module/block/parameters/events_dfl_poll_msecs