It looks like https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=812087
Can you rebuild pcscd with hotplug debug enabled. No need to install pcscd so you can't break your installation. 1. Get the source code of pcsc-lite, for example from https://alioth.debian.org/frs/?group_id=30105&release_id=2019#pcsclite-_1.8.15 -title-content 2. install the build dependencies using: $ sudo apt-get build-dep pcscd 3. edit the file PCSC/src/hotplug_libudev.c and change the line 66 from #undef DEBUG_HOTPLUG to #define DEBUG_HOTPLUG 4. configure pcsc-lite using "./configure" 5. run pcscd using: $ sudo ./src/pcscd -dfa 6. try to reproduce the 100% CPU consumption problem This may generate a lot of logs if the problem is with libudev. ** Bug watch added: Debian Bug tracker #812087 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=812087 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to pcsc-lite in Ubuntu. https://bugs.launchpad.net/bugs/1551897 Title: Excessive CPU utilization Status in pcsc-lite package in Ubuntu: New Bug description: In xenial, pcscd CPU utilization occasionally goes haywire: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 27404 root 20 0 384264 4992 2228 S 100.3 0.0 75:39.03 /usr/sbin/pcscd --foreground --auto-exit I get this about once a day since installing xenial. I can't quite connect it to any specific event on the system, it just seems to happen sporadically -- fan turns on, I run top, and there it is again. Never had this issue on same hardware incl. smartcard with trusty. I wonder if it might be this? https://bugs.debian.org/cgi- bin/bugreport.cgi?bug=718473 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pcsc-lite/+bug/1551897/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
