Sure, usb-devices gives the following -> 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=04.15 S: Manufacturer=Linux 4.15.0-54-generic xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=0000:00:14.0 C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub
T: Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 2 Spd=480 MxCh= 4 D: Ver= 2.10 Cls=09(hub ) Sub=00 Prot=02 MxPS=64 #Cfgs= 1 P: Vendor=0424 ProdID=2134 Rev=50.00 S: Manufacturer=SMSC S: Product=USB2134B C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 1 #EPs= 1 Cls=09(hub ) Sub=00 Prot=02 Driver=hub T: Bus=01 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 35 Spd=480 MxCh= 3 D: Ver= 2.10 Cls=09(hub ) Sub=00 Prot=02 MxPS=64 #Cfgs= 1 P: Vendor=03f0 ProdID=1847 Rev=59.72 S: Manufacturer=GenesysLogic S: Product=USB2.1 Hub C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 1 #EPs= 1 Cls=09(hub ) Sub=00 Prot=02 Driver=hub T: Bus=01 Lev=03 Prnt=35 Port=02 Cnt=01 Dev#= 37 Spd=12 MxCh= 0 D: Ver= 2.01 Cls=11() Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1b20 ProdID=0400 Rev=01.00 S: Manufacturer=MSTAR S: Product=BillBoard S: SerialNumber=12345 C: #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 0 Cls=11() Sub=00 Prot=00 Driver=(none) T: Bus=01 Lev=02 Prnt=02 Port=01 Cnt=02 Dev#= 6 Spd=1.5 MxCh= 0 D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=413c ProdID=2106 Rev=01.77 S: Manufacturer=Dell S: Product=Dell QuietKey Keyboard C: #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=01 Driver=usbhid T: Bus=01 Lev=02 Prnt=02 Port=02 Cnt=03 Dev#= 8 Spd=1.5 MxCh= 0 D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=413c ProdID=3012 Rev=43.01 S: Manufacturer=Dell S: Product=Dell USB Optical Mouse C: #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=01 Prot=02 Driver=usbhid T: Bus=01 Lev=02 Prnt=02 Port=03 Cnt=04 Dev#= 36 Spd=480 MxCh= 3 D: Ver= 2.10 Cls=09(hub ) Sub=00 Prot=02 MxPS=64 #Cfgs= 1 P: Vendor=03f0 ProdID=1847 Rev=59.72 S: Manufacturer=GenesysLogic S: Product=USB2.1 Hub C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 1 #EPs= 1 Cls=09(hub ) Sub=00 Prot=02 Driver=hub T: Bus=01 Lev=03 Prnt=36 Port=02 Cnt=01 Dev#= 38 Spd=12 MxCh= 0 D: Ver= 2.01 Cls=11() Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1b20 ProdID=0400 Rev=01.00 S: Manufacturer=MSTAR S: Product=BillBoard S: SerialNumber=12345 C: #Ifs= 1 Cfg#= 1 Atr=c0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 0 Cls=11() Sub=00 Prot=00 Driver=(none) T: Bus=01 Lev=01 Prnt=01 Port=06 Cnt=02 Dev#= 3 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=8087 ProdID=0a2b Rev=00.10 C: #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA I: If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb I: If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb T: Bus=01 Lev=01 Prnt=01 Port=08 Cnt=03 Dev#= 5 Spd=480 MxCh= 0 D: Ver= 2.01 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=05c8 ProdID=0808 Rev=01.07 S: Manufacturer=Generic S: Product=HP HD Camera S: SerialNumber=0001 C: #Ifs= 4 Cfg#= 1 Atr=80 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=01 Driver=uvcvideo I: If#= 1 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=01 Driver=uvcvideo I: If#= 2 Alt= 0 #EPs= 1 Cls=0e(video) Sub=01 Prot=01 Driver=uvcvideo I: If#= 3 Alt= 0 #EPs= 0 Cls=0e(video) Sub=02 Prot=01 Driver=uvcvideo 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=04.15 S: Manufacturer=Linux 4.15.0-54-generic xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=0000:00:14.0 C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub T: Bus=02 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 2 Spd=5000 MxCh= 4 D: Ver= 3.00 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1 P: Vendor=0424 ProdID=5534 Rev=50.00 S: Manufacturer=SMSC S: Product=USB5534B C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub T: Bus=02 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 17 Spd=5000 MxCh= 2 D: Ver= 3.10 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1 P: Vendor=03f0 ProdID=0620 Rev=59.72 S: Manufacturer=GenesysLogic S: Product=USB3.1 Hub C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub T: Bus=02 Lev=02 Prnt=02 Port=03 Cnt=02 Dev#= 18 Spd=5000 MxCh= 2 D: Ver= 3.10 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1 P: Vendor=03f0 ProdID=0620 Rev=59.72 S: Manufacturer=GenesysLogic S: Product=USB3.1 Hub C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 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=04.15 S: Manufacturer=Linux 4.15.0-54-generic xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=0000:3a:00.0 C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 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=10000 MxCh= 2 D: Ver= 3.10 Cls=09(hub ) Sub=00 Prot=03 MxPS= 9 #Cfgs= 1 P: Vendor=1d6b ProdID=0003 Rev=04.15 S: Manufacturer=Linux 4.15.0-54-generic xhci-hcd S: Product=xHCI Host Controller S: SerialNumber=0000:3a:00.0 C: #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub -- 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/1488426 Title: High CPU usage of kworker/ksoftirqd Status in HWE Next: New Status in linux package in Ubuntu: Confirmed Bug description: kworker consuming 71.5% cpu resource ksoftirqd consuming 28.9% cpu resource It leads to power consumption issue and sometimes leads to BT does not work. 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