This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1864147 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Changed in: linux (Ubuntu Bionic) Status: New => Incomplete ** Tags added: bionic -- 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/1864147 Title: [bionic] Support Intel Atom (Baytrail-I) HS-UART serdev slaves over tty Status in linux package in Ubuntu: Incomplete Status in linux source package in Bionic: Incomplete Bug description: [SRU Justification] [Impact] Support Intel Atom (Baytrail-I) HS-UART serdev slaves over tty On systems using Intel Atom (Baytrail-I) SoC's, slave devices connected on HSUART1/2 ports are described by the ACPI BIOS as virtual hardware using HID's INT3511/INT3512. As a consequence, HW manufacturers have complete freedom to install any devices on-board as long as they can be accessed over serial tty interface. Once such device is Dell Edge 3002 IoT Gateway which sports ZigBee & GPS devices on the HS-UART ports 1 & 2 respectively. Post 4.15, with CONFIG_SERIAL_DEV_BUS=y, serdev port controller driver handles the enumeration for the slaves connected on these ports. Also, /dev/ttySx device nodes for these ports are no longer exposed to the userspace. [Fixes] This patchset allows the skipped virtual UART's with ACPI HID's mentioned above to be enumerated as ttyHSx port. [Regression Potential] Low. This driver binds only to Intel Atom E38XX (Baytrail-I) virtual serial ports on the Dell Edge 300x GW. These updates are being carried in the linux-oem (4.15.y) kernel for more than 2 years without any regressions. [Note] This driver has been submitted upstream and is under review. This issue has been identified as a regression in 4.15 and multiple solutions are being explored. Meanwhile, to support customer and maintain release schedule, this driver needs to be in Ubuntu 4.15 based kernels. More info: https://marc.info/?t=152455871600007&r=1&w=2 linux-oem buglink: http://bugs.launchpad.net/bugs/1690362 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1864147/+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