hpaio entry added automatically to /etc/sane.d/dll.conf

[Rolf Leggewie]

When plugging in my HP Officejet 6210 via USB an entry "hpaio" is added to /etc/sane.d/dll.conf. This breaks scanbd.

[Till Kamppeter (till-kamppeter)]

I have checked and the Ubuntu package of HPLIP does not modify dll.conf. Instead, it adds an extra config file in /etc/sane.d/dll.d/. Probably you have installed HPLIP from the original source. Adding upstream task ...

[Rolf Leggewie (r0lf)]

Thank you for the quick response.

I'm very hesitant to install third-party packages and "apt-cache policy hplip" confirms that I have the trusty package installed. I ran "dpkg -L hplip" and then had a closer look at /lib/udev/rules.d/56-hpmud.rules. Line 18 might be causing this, I suppose.

[Rolf Leggewie (r0lf)]

It is lines 20 and 21 in xenial source now.

$ grep -rn hpaio data/rules/
data/rules/56-hpmud_sysfs.rules:12:SYSFS{idVendor}=="03f0", SYSFS{idProduct}=="????", OWNER="root", GROUP="lp", MODE="0666", ENV{sane_hpaio}="yes", ENV{libsane_matched}="yes", ENV{hp_test}="yes", ENV{ID_HPLIP}="1"
data/rules/56-hpmud_sysfs.rules:20:# If sane-bankends is installed add hpaio backend support to dll.conf if needed.
data/rules/56-hpmud_sysfs.rules:21:ENV{sane_hpaio}=="yes", RUN+="/bin/sh -c 'grep -q ^#hpaio /etc/sane.d/dll.conf;if [ $$? -eq 0 ];then sed -i -e s/^#hpaio/hpaio/ /etc/sane.d/dll.conf;else grep -q ^hpaio /etc/sane.d/dll.conf;if [ $$? -ne 0 ];then echo hpaio >>/etc/sane.d/dll.conf;fi;fi'"

[Rolf Leggewie (r0lf)]

Sorry for the bad line breaks. Just check the file at http://anonscm.debian.org/cgit/printing/hplip.git/tree/data/rules/56-hpmud_sysfs.rules lines 20f

[Till Kamppeter (till-kamppeter)]

I do not see where data/rules/56-hpmud_sysfs.rules gets installed into the system.

Can you run

grep hpaio /*/udev/rules.d/*

and post the output here?

For each resulting file, can you run

dpkg -S <file>

If you remove the hpaio line from /etc/sane.d/dll.conf does scnbd return to work?

If you unplug and re-plug your HP device, does the "hpaio" line re-added?

Does one of the resulting files of the search above contain a line like

ENV{sane_hpaio}=="yes", RUN+="/bin/sh -c 'grep -q ^#hpaio /etc/sane.d/dll.conf;if [ $$? -eq 0 ];then sed -i -e s/^#hpaio/hpaio/ /etc/sane.d/dll.conf;else grep -q ^hpaio /etc/sane.d/dll.conf;if [ $$? -ne 0 ];then echo hpaio >>/etc/sane.d/dll.conf;fi;fi'"

which one(s)? To which package does it belong ("dpkg -S <file>")?

[Rolf Leggewie (r0lf)]

Till, #2 has the answer to your question.

/lib/udev/rules.d/56-hpmud.rules is the relevant file when installed, coming from data/rules/56-hpmud_sysfs.rules in source

[Till Kamppeter (till-kamppeter)]

In Xenial there is no modification of dll.conf in /lib/udev/rules.d/56-hpmud.rules, so it seems that this got fixed during the time.

I recommend to upgrade from Trusty to Xenial as soon as Xenial gets released next month.

[Till Kamppeter (till-kamppeter)]

You could also try to replace your /lib/udev/rules.d/56-hpmud.rules by the one from Xenial or at least to comment out the line which modifies dll.conf.

[Rolf Leggewie (r0lf)]

I'm sorry, but I think you are wrong again about "nothing going on here". I already pointed several times to the *current* code, so Xenial most certainly is affected.

http://anonscm.debian.org/cgit/printing/hplip.git/tree/data/rules/56-hpmud_sysfs.rules lines 20f

[Rolf Leggewie (r0lf)]

OK, I take that back. Inspection of the files in the xenial package suggests that this might indeed be fixed in the latest development release.

[Rolf Leggewie (r0lf)]

It looks like this was fixed in r53 in wily.

http://bazaar.launchpad.net/~ubuntu-branches/ubuntu/wily/hplip/wily-proposed/revision/53

Till, do you suggest to backport the entire file56-hpmud.rules from xenial or simply drop lines 18f which are responsible for meddling with /etc/sane.d/dll.conf?

[Rolf Leggewie (r0lf)]

This has been an upstream fix. Closing upstream task.