https://news.ycombinator.com/item?id=18711970
The sad state of being able to use Ubuntu on touch devices (hint: you can't) https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1807250 So, apparently support for an entire bus class has been missing since ubuntu bionic (18.04 LTS) was released in april. Using kernels from other distros or ubuntus old xenial 4.4.0-134 all provide access to sensor data, suggesting the issue is with current (and shipped) kernels. Three weeks into this not much is happening even though the issue also affect canonical-specific 4,18 kernels. This all suggests that pretty much no one has been using ubuntu on touch devices otherwise i wouldn't be the first one to notice this. Now that the devs know this they have no time for it... ** Also affects: gdm3 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1807250 Title: At some point in the 18.04 cycle, /sys/bus/iio has disappeared from my system Status in gdm3 package in Ubuntu: New Status in linux package in Ubuntu: Confirmed Bug description: I have a Yoga 900-13ISK and a Thinkpad T470s. Both have had working screen rotation in the past. However, I noticed today while supporting a user in #ubuntu, neither do now. No icon in the Gnome menu and: # G_MESSAGES_DEBUG=all iio-sensor-proxy ** (process:14877): DEBUG: 12:31:21.603: Could not find any supported sensors Indeed, /sys/bus/iio does not exist! I believe this is distinct from LP: #1792813, as I have just tested mainline 4.19 and it also does not work. I am working on getting more data, including testing older kernels from 18.04, but it might take me some time. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/1807250/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp