So I see this is the Ubuntu bug tracker, yet I have the same in Solus, Kernel 5.2.9-125.current.
Not sure this is helpful, but I'll add my USB devices anyway in case it helps narrow it down. This happens on an off, single core going to near 100% usage with USB PM to blame it seems. Would a perf report help? This happened today, when I had a dell USB-C monitor plugged in, then 2 mice, a keyboard and a headset plugged in through that. The below does NOT include these, so let me know if you'd like usb-devices with all peripherals plugged in. usb_devices-> T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh=12 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=1d6b ProdID=0002 Rev=05.02 S: Manufacturer=Linux 5.2.9-125.current xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=0000:00:14.0 C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub T: Bus=01 Lev=01 Prnt=01 Port=09 Cnt=01 Dev#= 6 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=27c6 ProdID=5385 Rev=01.00 S: Manufacturer=HTMicroelectronics S: Product=Goodix Fingerprint Device S: SerialNumber=HTK32 C: #Ifs= 2 Cfg#= 1 Atr=a0 MxPwr=100mA I: If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=02 Prot=01 Driver=cdc_acm I: If#=0x1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=cdc_acm T: Bus=01 Lev=01 Prnt=01 Port=04 Cnt=02 Dev#= 2 Spd=480 MxCh= 0 D: Ver= 2.01 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0c45 ProdID=6723 Rev=80.08 S: Manufacturer=CN09357GLOG00913AAGAA01 S: Product=Integrated_Webcam_HD C: #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA I: If#=0x0 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=00 Driver=uvcvideo I: If#=0x1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=00 Driver=uvcvideo T: Bus=01 Lev=01 Prnt=01 Port=06 Cnt=03 Dev#= 4 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=0489 ProdID=e0a2 Rev=00.01 C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#=0x0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb I: If#=0x1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb T: Bus=02 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 6 D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1 P: Vendor=1d6b ProdID=0003 Rev=05.02 S: Manufacturer=Linux 5.2.9-125.current xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=0000:00:14.0 C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub T: Bus=03 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=480 MxCh= 2 D: Ver= 2.00 Cls=09(hub ) Sub=00 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=1d6b ProdID=0002 Rev=05.02 S: Manufacturer=Linux 5.2.9-125.current xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=0000:39:00.0 C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub T: Bus=04 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=5000 MxCh= 2 D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1 P: Vendor=1d6b ProdID=0003 Rev=05.02 S: Manufacturer=Linux 5.2.9-125.current xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=0000:39:00.0 C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#=0x0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1488426 Title: High CPU usage of kworker/ksoftirqd To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1488426/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
