I'd like to perform a kernel bisect to identify the commit that introduced this regression. We first need to identify the last good kernel and the first bad kernel.
It might be good to first test the latest mainline kernel to see if this bug is already fixed upstream. Can you test v4.14-rc5 to see if it resolves this bug? It can be downloaded from: http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.14-rc5/ ** Also affects: linux (Ubuntu Zesty) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Zesty) Status: New => Triaged ** Changed in: linux (Ubuntu Zesty) Importance: Undecided => Medium ** Changed in: linux (Ubuntu) Status: Confirmed => In Progress ** Changed in: linux (Ubuntu Zesty) Status: Triaged => In Progress ** Changed in: linux (Ubuntu Zesty) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) ** Changed in: linux (Ubuntu) Assignee: (unassigned) => Joseph Salisbury (jsalisbury) -- 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/1723785 Title: 'cat /sys/class/power_supply/BAT0/capacity' hangs indefinitely (Dell XPS15, Ubuntu 17.04 w/kernel 4.10.0-37-generic) Status in linux package in Ubuntu: In Progress Status in linux source package in Zesty: In Progress Bug description: On performing 'cat /sys/class/power_supply/BAT0/capacity' there is a freeze in the terminal, no error message, no feedback. This works just fine with kernel 4.10.0-21-generic. Also, I cannot do 'sudo systemctl suspend' with 4.10.0-37-generic (this also works fine with 4.10.0-21-generic. Additionally, with any kernel later than 4.10.0-21-generic, I need to have 'nouveau.modeset=0' in the GRUB_CMDLINE_LINUX_DEFAULT for it to boot (not needed with the 4.10.0-21 kernel. Hardware = Dell XPS15 (9560) with Ubuntu 17.04 up-to-date. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1723785/+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
