** Tags removed: verification-needed-xenial ** Tags added: verification-done-xenial
-- 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/1851347 Title: libmbim-proxy using 100% CPU on a Dell Edge Gateway 3002 Status in HWE Next: Fix Released Status in linux package in Ubuntu: Fix Committed Status in linux source package in Xenial: Fix Committed Bug description: == Impact == A Dell Edge Gateway 3002 user reported that `top` reports around 100% CPU usage for the libmbim-proxy process. Seen in at least 40% of their devices at some point during the last 6 months. The CPU keeps high at ~100% days or weeks, but does return back to normal without a reboot. The LTE connectivity is seemingly still working as usual. The issue starts after an EPIPE error in the syslogs: 'cdc_mbim 1-3:1.12: nonzero urb status received: -EPIPE'. == Fix == 8fec9355a968 USB: cdc-wdm: ignore -EPIPE from GetEncapsulatedResponse This has been in mainline kernel since 4.14. == Testcase == Connect to the LTE network and see if libmbim-proxy uses 100% after some point. == Risk of Regression == Low, since 1. Already tested by original reporter and no issue found after more than a week (usually it fails twice in a week). 2. Ignoring -EPIPE is the default behavior after 4.14. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1851347/+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
