Connecting USB devices failing

[Rob Ward]

rob@DesktopUbuntu:~$ lsb_release -rd
Description: Ubuntu 14.04.3 LTS
Release: 14.04

Ubuntu Software Center 13.10 (XUbuntu)

I have had a problem with connecting my phone as a memory/disk device on Ubuntu 14.04 and found the same with a live install of 15.04. I recently bought an expensive 3-D Robox-CEL printer and was also experiencing no joy at all with extremely flaky connections. Fortunately one of the engineers at Robox-CEL published a patch to the udev .rules files and this cured the 3-D Printer connections and when I applied the same to the mobile phone .rules file it has been reliable as well. His assertion was the later Linux's (I am not sure how wide he sees this problem here) have some sort of 'improvement' that interrogates the USB devices and in my case these two devices don't work with this new 'feature' and are extremely flaky.

Here are the two new .rules I have added, that work for me

# Samsung
ATTRS{idVendor}=="04e8", ATTRS{idProduct}=="685b", ENV{ID_MM_DEVICE_IGNORE}="1"
SUBSYSTEM=="usb", ATTR{idVendor}=="04e8", ATTR{idProduct}=="685b", GROUP="plugdev", NAME="GalaxySII", MODE="0666", OWNER="<username>"

#Robox Rules to stop the Linux sending disruptive commands to the 3D-Printer
ATTRS{idVendor}=="16d0", ATTRS{idProduct}=="081b", ENV{ID_MM_DEVICE_IGNORE}="1"
#Establish a standard name for the Robox tty interface
SUBSYSTEM=="tty", ATTRS{idVendor}=="16d0", ATTRS{idProduct}=="081b", SYMLINK="robox%n", MODE="0666"

The first line in the .rules is the really critical one.

This has been a huge problem for me, and I registering it as a 'bug' as I believe the OS should be a bit more clever with these devices and should not require this sort of user work-around. Over the last two years my phone went from super reliable to unusable, wasting huge amounts of my time, and recently made my 14 day old 3-D Printer from a quality manufacturer useless.

Thank you for your time and patience. I can send you a log of the transactions of the Robox machine's interactions with the USB port if you need them. However the above two files should give a good lead on where I feel the problems lie.

Cheers, Rob Ward

PS The Robox people also altered the shell script in their software to look for the newly named 'robox0' connection.

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1495723/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Rob Ward (rl-ward)]

Sorry there is no change, as I don't know enough to nominate what Package or Project may be appropriate to direct this report to. I could find things using (Choose...) but have no evidence they are connected to the issue I have had.

My apologies for not being able to help out here.