Usability testing with multiple devices in the same session with the same user?

We had a pilot test of usability testing. We only planned to do tests on desktop pc because that’s what we think is the main device with the our user group.

After the pilot we had a feedback conversation with our teacher. One of the suggestions he made was that we should add some tasks that are done with the mobile device.

I disagreed immediately but couldn’t come up with any good explanation why this is a bad thing. My opinion was not taken seriously because teacher is ‘the pro’. Now I would like to know if this really is a standard testing method to have multiple devices in the same testing?

For me it slunds like finding issues here and there and not focusing anything. So you most likely find more issues but wouldn’t it be more important to find the ‘famous 80 % of the problems’ with one device? In my opinion the experience with the first device affects to the use of second device because the system being tested is only a part of a website.

In our case we cannot have more participants.

Do I need an extra license to control access to Sharepoint Online from unmanaged devices?

We have a Office 365 for business Sharepoint Online environment and struggle to control access from unmanaged devices. Users use family laptops without logging to the local OS. When a authorised user opens a document in Sharepoint with a local App (Word) the service and credentials are cached and the next user of the laptop has onautorized access to Sharepoint. I think this is the same issue with internet cafe devices. How can I control access of Sharepoint Online from unmaged devices? Do I need an additional license to configure this? Pleas help Jan

Is the default orientation for mobile devices hardware or software specific?

I have noticed that when switching between one mobile application to another, sometimes the orientation of the user interface changes so that I have to rotate the screen 180 degrees so that it is facing the right way. I assume that if the software or hardware recognizes the direction that the user is holding the device, or at least the orientation that the most recent application is set at, then it should not change the orientation.

This leads me to wondering if there is actually a default orientation for devices which is configured in the hardware, and if there is also some configuration of the software as well (and that they sometimes are configured to unintentionally clash).

Is there are default orientation in landscape view for mobile devices? And if so do they exist in hardware and/or software configurations?

Ubuntu 19.04 No Audio Input Devices to Select

I’m unable to use my Thinkpad’s microphone with Ubuntu 19.04. When I attempt to choose an audio input device, none are available. When taking a look in pavucontrol, it lists my microphone as unplugged.

I’ve seen a number of similar questions but none of the answers have worked to help fix this problem.

Thanks in advance for any advice.

sound settings screenshot pavucontrol screenshot

Identify devices from lsof

We have certain Ubuntu (18.04) servers operating .NET Core apps on Kestrel. Recently the apps and OSes have been hanging, requiring entire VM restart.

What we found was the app had way too many file descriptors for network sockets. i.e. /proc/

Correspondingly, a query with lsof would reveal an ever-growing pool of “protocol:TCP” of type sock the dotnet process leaks.

COMMAND  PID     USER   FD      TYPE             DEVICE SIZE/OFF   NODE NAME dotnet  6905 www-data  675u     sock                0,9      0t0  96816 protocol: TCP dotnet  6905 www-data  676u     sock                0,9      0t0  96863 protocol: TCP dotnet  6905 www-data  677u     sock                0,9      0t0  96910 protocol: TCP dotnet  6905 www-data  678u     sock                0,9      0t0  96959 protocol: TCP dotnet  6905 www-data  679u     sock                0,9      0t0  97006 protocol: TCP dotnet  6905 www-data  680u     sock                0,9      0t0  97053 protocol: TCP dotnet  6905 www-data  681u     sock                0,9      0t0  97101 protocol: TCP 

From another thread with similar reported problem, we understand that is due to some code (likely some library) in the .NET app that is opening sockets without binding IP address or port to it.

However, what we particularly like to know in this case is, what are DEVICE 0 and 9 in this context? I have seen other reports list 0,5 or 0,7 but nobody explains what those numbers represent which type of device.

Devices on Konqueror

As it happens in Konqueror 5.0.97 there is no sidebar which was earlier toggled by F9, which is sad, because it was very useful. Still, is it possible to view the attached devices (harddrive, usb) as separate links as it was earlier or as it is in Dolphin? Or maybe it is possible somehow to use an earlier version of Konqueror with the sidebar? I am using Ubuntu 18.

Thanks you.

Dual boot from two separate physical storage devices [migrated]

I have a new laptop that has a 256GB NVMe SSD drive with Windows 10 currently installed. The laptop has 2 NVMe SSD slots, so I plan to move the 256GB SSD to the second slot, and insert a new 1TB SSD drive into the first slot.


  • Slot 1: 1TB SSD with Linux
  • Slot 2: 256GB SSD with Windows

I plan to dual boot. Is there anything special I need to be aware of in order to make this possible? Can I simply move the first SSD into the second slot, install Linux on the new 1TB SSD, configure the Grub2 boot loader and go? Is there anything I’m missing?

As I type this out I’m feeling like it’s a dumb question. I’ve done plenty of dual-booting in the past but I believe it was on separate partitions and not often on separate drives — or at least it’s been a while since I’ve done this. 😀