This is actually a bug in ccid's handling of composite USB devices, and has been fixed upstream (https://alioth.debian.org/plugins/scmgit/cgi- bin/gitweb.cgi?p=pcsclite/CCID.git;a=commitdiff_plain;h=3c21f452543983f3625a1965ce234074cbda6865).
My experience was that this bug caused pcscd to segfault, rather than to consume 100% CPU, but the fix appears to be the same either way. I've attached a debdiff that fixes the issue for me, and I've uploaded a test build to my PPA (https://launchpad.net/~broder/+archive/ubuntu /ubuntu-tests). I suspect this merits an SRU, since it's a significant regression in functionality without a good workaround; I'll start on the paperwork. ** Patch added: "ccid_1.4.22-1ubuntu0.1.debdiff" https://bugs.launchpad.net/ubuntu/+source/ccid/+bug/1551897/+attachment/4659458/+files/ccid_1.4.22-1ubuntu0.1.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1551897 Title: Excessive CPU utilization To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ccid/+bug/1551897/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
