Hello Dmitry,
Thank you for submitting this bug and reporting a problem with hplip. You made
this bug report some time ago and Ubuntu and hplip have been updated since
then.
Could you confirm that this is no longer a problem and that we can close the
ticket?
If it is still a problem, are you still interested in finding a solution to
this bug?
If you are, could you let us know and, in the current version, could you run
the following (only once):
apport-collect 1378748
and upload the updated logs and and any other logs that are relevant for this
particular issue.
Thank you again for helping make Ubuntu and hplip better.
G
[Ubuntu Bug Squad volunteer triager]
** Changed in: hplip (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1378748
Title:
All scanning programs hang in pp_probe_devices()
Status in hplip package in Ubuntu:
Incomplete
Bug description:
Hi,
I have HP PhotoSmart C4283 and a (mostly) fresh Ubuntu 14.10 amd64
installation.
Any scanning program, like simple-scan or xsane, hangs when trying to
do anything with this printer (the process becomes defunct/zombie).
The backtrace is:
#0 ioctl () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007fffecd80b40 in pp_probe_devices (lst=0xb <error: Cannot access
memory at address 0xb>, lst@entry=0x7fffffff5790 "", lst_size=-2147192681,
lst_size@entry=16144,
cnt=0x7fffffff4d9c, cnt@entry=0x7fffffff5468) at io/hpmud/pp.c:1228
#2 0x00007fffecd78661 in hpmud_probe_devices (bus=bus@entry=HPMUD_BUS_ALL,
buf=buf@entry=0x7fffffff56a0 "direct
hp:/usb/Photosmart_C4200_series?serial=MY798KP16D04VP \"HP Photosmart C4200
series\" \"HP Photosmart C4200 series USB MY798KP16D04VP HPLIP\"
\"MFG:HP;MDL:Photosmart C4200 series;CLS:PRINTER;DES:Phot"...,
buf_size=buf_size@entry=16384, cnt=cnt@entry=0x7fffffff5468,
bytes_read=bytes_read@entry=0x7fffffff546c)
at io/hpmud/hpmud.c:600
#3 0x00007fffed3796c5 in DevDiscovery (localOnly=localOnly@entry=0) at
scan/sane/hpaio.c:278
#4 0x00007fffed379cd9 in sane_hpaio_get_devices (deviceList=0x7fffffff9758,
localOnly=0) at scan/sane/hpaio.c:359
#5 0x00007ffff7bd6427 in sane_dll_get_devices (device_list=0x69fb80,
local_only=0) at dll.c:1058
According to strace, the last two syscalls are:
open("/dev/parport0", O_RDONLY|O_NOCTTY) = 11
ioctl(11, PPGETMODES, 0x7fffbe27f54c)
... and the last one (ioctl) hangs (i.e. strace didn't print even the
closing bracket).
This happens even when the device is NOT plugged via USB.
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