[reply to self, now with the reporter in CC; sorry for the noise] On 24.08.22 14:23, Thorsten Leemhuis wrote: > Hi, this is your Linux kernel regression tracker. > > I noticed a regression report in bugzilla.kernel.org that afaics nobody > acted upon since it was reported. That's why I decided to forward it by > mail to those that afaics should handle this. > > To quote from https://bugzilla.kernel.org/show_bug.cgi?id=216336 : > >> S.Bonomar 2022-08-08 05:28:54 UTC >> >> i am new on kernel development, >> i can successfully use my Huawei vodafone k4203 usb modem with kernel version 4.15(I test it on ubuntu-18.04.1 LTS with kernel 4.15 (i donwlaod this iso on 2018)) but when i try to use it with the newer 5.x.x kernel i get the error "kernel: cdc_mbim 2-1.5:2.0: SET_NTB_FORMAT failed >> kernel: cdc_mbim 2-1.5:2.0: bind() failure" >> >> when I want to use I enter on ubuntu-18.04.1LTS, insert the device and reboot and enter on fedora-36 >> but when I enter the fedora-36 and insert the device, reboot and enter the ubuntu-18.04.1 LTS, the device fails on ubuntu-18.04.1 LTS, just remove and insert again and it works >> >> Now i'm use (Fedora_36 kernel 5.18.13-200.x86_64) >> I compiled the kernel-{5.4,4.19} longterm and the problem persist >> But when I access the 4.x.x kernel then reboot the PC and access the 5.x.x kernel it works, do you have any idea how I can solve this problem ? :) >> >> Note: the modem has a dhcp server and web server. >> >> My log on fedora-36: >> [ 115.571291] usb 2-1.4: new high-speed USB device number 7 using ehci-pci >> [ 115.652037] usb 2-1.4: New USB device found, idVendor=12d1, idProduct=1f1c, bcdDevice= 1.02 >> [ 115.652045] usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >> [ 115.652049] usb 2-1.4: Product: HUAWEI Mobile >> [ 115.652052] usb 2-1.4: Manufacturer: Vodafone(Huawei) >> [ 115.652054] usb 2-1.4: SerialNumber: FFFFFFFFFFFFFFFF >> [ 115.779381] usb-storage 2-1.4:1.0: USB Mass Storage device detected >> [ 115.779821] scsi host4: usb-storage 2-1.4:1.0 >> [ 115.779917] usbcore: registered new interface driver usb-storage >> [ 115.787770] usbcore: registered new interface driver uas >> [ 116.646327] usbcore: registered new interface driver cdc_ether >> [ 116.655897] usbcore: registered new interface driver cdc_ncm >> [ 116.665733] usbcore: registered new interface driver cdc_wdm >> [ 116.706710] cdc_mbim 2-1.4:2.0: SET_NTB_FORMAT failed >> [ 116.730917] cdc_mbim 2-1.4:2.0: bind() failure >> [ 116.730987] usbcore: registered new interface driver cdc_mbim >> [ 116.935660] usb 2-1.4: USB disconnect, device number 7 >> [ 121.459317] usb 2-1.4: new high-speed USB device number 8 using ehci-pci >> [ 121.539511] usb 2-1.4: New USB device found, idVendor=12d1, idProduct=1f1c, bcdDevice= 1.02 >> [ 121.539520] usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >> [ 121.539525] usb 2-1.4: Product: HUAWEI Mobile >> [ 121.539528] usb 2-1.4: Manufacturer: Vodafone(Huawei) >> [ 121.539531] usb 2-1.4: SerialNumber: FFFFFFFFFFFFFFFF >> [ 121.594546] usb-storage 2-1.4:1.0: USB Mass Storage device detected >> [ 121.594911] scsi host4: usb-storage 2-1.4:1.0 >> [ 122.466808] cdc_mbim 2-1.4:2.0: SET_NTB_FORMAT failed >> [ 122.490514] cdc_mbim 2-1.4:2.0: bind() failure >> [ 122.567541] usb 2-1.4: USB disconnect, device number 8 >> [ 127.091345] usb 2-1.4: new high-speed USB device number 9 using ehci-pci >> [ 127.172930] usb 2-1.4: New USB device found, idVendor=12d1, idProduct=1f1c, bcdDevice= 1.02 >> [ 127.172939] usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >> [ 127.172943] usb 2-1.4: Product: HUAWEI Mobile >> [ 127.172947] usb 2-1.4: Manufacturer: Vodafone(Huawei) >> [ 127.172949] usb 2-1.4: SerialNumber: FFFFFFFFFFFFFFFF >> [ 127.226234] usb-storage 2-1.4:1.0: USB Mass Storage device detected >> [ 127.226706] scsi host4: usb-storage 2-1.4:1.0 >> [ 128.090497] cdc_mbim 2-1.4:2.0: SET_NTB_FORMAT failed >> [ 128.114422] cdc_mbim 2-1.4:2.0: bind() failure >> [ 128.199565] usb 2-1.4: USB disconnect, device number 9 >> >> /var/lib/messages: >> Aug 7 17:59:49 localhost kernel: usb 2-1.4: Product: HUAWEI Mobile >> Aug 7 17:59:49 localhost kernel: usb 2-1.4: Manufacturer: Vodafone(Huawei) >> Aug 7 17:59:49 localhost kernel: usb 2-1.4: SerialNumber: FFFFFFFFFFFFFFFF >> Aug 7 17:59:49 localhost mtp-probe[1531]: checking bus 2, device 7: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 17:59:49 localhost mtp-probe[1531]: bus: 2, device: 7 was not an MTP device >> Aug 7 17:59:49 localhost systemd[1]: Created slice system-usb_modeswitch.slice - Slice /system/usb_modeswitch. >> Aug 7 17:59:49 localhost systemd[1]: Starting usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0... >> Aug 7 17:59:49 localhost kernel: usb-storage 2-1.4:1.0: USB Mass Storage device detected >> Aug 7 17:59:49 localhost kernel: scsi host4: usb-storage 2-1.4:1.0 >> Aug 7 17:59:49 localhost kernel: usbcore: registered new interface driver usb-storage >> Aug 7 17:59:49 localhost kernel: usbcore: registered new interface driver uas >> Aug 7 17:59:49 localhost mtp-probe[1546]: checking bus 2, device 7: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 17:59:49 localhost mtp-probe[1546]: bus: 2, device: 7 was not an MTP device >> Aug 7 17:59:50 localhost usb_modeswitch[1551]: switch device 12d1:1f1c on 002/007 >> Aug 7 17:59:50 localhost kernel: usbcore: registered new interface driver cdc_ether >> Aug 7 17:59:50 localhost kernel: usbcore: registered new interface driver cdc_ncm >> Aug 7 17:59:50 localhost kernel: usbcore: registered new interface driver cdc_wdm >> Aug 7 17:59:50 localhost kernel: cdc_mbim 2-1.4:2.0: SET_NTB_FORMAT failed >> Aug 7 17:59:50 localhost kernel: cdc_mbim 2-1.4:2.0: bind() failure >> Aug 7 17:59:50 localhost kernel: usbcore: registered new interface driver cdc_mbim >> Aug 7 17:59:50 localhost kernel: usb 2-1.4: USB disconnect, device number 7 >> Aug 7 17:59:55 localhost kernel: usb 2-1.4: new high-speed USB device number 8 using ehci-pci >> Aug 7 17:59:55 localhost kernel: usb 2-1.4: New USB device found, idVendor=12d1, idProduct=1f1c, bcdDevice= 1.02 >> Aug 7 17:59:55 localhost kernel: usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >> Aug 7 17:59:55 localhost kernel: usb 2-1.4: Product: HUAWEI Mobile >> Aug 7 17:59:55 localhost kernel: usb 2-1.4: Manufacturer: Vodafone(Huawei) >> Aug 7 17:59:55 localhost kernel: usb 2-1.4: SerialNumber: FFFFFFFFFFFFFFFF >> Aug 7 17:59:55 localhost kernel: usb-storage 2-1.4:1.0: USB Mass Storage device detected >> Aug 7 17:59:55 localhost kernel: scsi host4: usb-storage 2-1.4:1.0 >> Aug 7 17:59:55 localhost mtp-probe[1565]: checking bus 2, device 8: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 17:59:55 localhost mtp-probe[1565]: bus: 2, device: 8 was not an MTP device >> Aug 7 17:59:55 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Main process exited, code=killed, status=15/TERM >> Aug 7 17:59:55 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Failed with result 'signal'. >> Aug 7 17:59:55 localhost systemd[1]: Stopped usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0. >> Aug 7 17:59:55 localhost audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=usb_modeswitch@2-1.4:1.0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed' >> Aug 7 17:59:55 localhost systemd[1]: Starting usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0... >> Aug 7 17:59:55 localhost mtp-probe[1575]: checking bus 2, device 8: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 17:59:55 localhost mtp-probe[1575]: bus: 2, device: 8 was not an MTP device >> Aug 7 17:59:55 localhost usb_modeswitch[1579]: switch device 12d1:1f1c on 002/008 >> Aug 7 17:59:56 localhost kernel: cdc_mbim 2-1.4:2.0: SET_NTB_FORMAT failed >> Aug 7 17:59:56 localhost kernel: cdc_mbim 2-1.4:2.0: bind() failure >> Aug 7 17:59:56 localhost kernel: usb 2-1.4: USB disconnect, device number 8 >> Aug 7 18:00:00 localhost kernel: usb 2-1.4: new high-speed USB device number 9 using ehci-pci >> Aug 7 18:00:00 localhost kernel: usb 2-1.4: New USB device found, idVendor=12d1, idProduct=1f1c, bcdDevice= 1.02 >> Aug 7 18:00:00 localhost kernel: usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >> Aug 7 18:00:00 localhost kernel: usb 2-1.4: Product: HUAWEI Mobile >> Aug 7 18:00:00 localhost kernel: usb 2-1.4: Manufacturer: Vodafone(Huawei) >> Aug 7 18:00:00 localhost kernel: usb 2-1.4: SerialNumber: FFFFFFFFFFFFFFFF >> Aug 7 18:00:01 localhost kernel: usb-storage 2-1.4:1.0: USB Mass Storage device detected >> Aug 7 18:00:01 localhost kernel: scsi host4: usb-storage 2-1.4:1.0 >> Aug 7 18:00:01 localhost mtp-probe[1586]: checking bus 2, device 9: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 18:00:01 localhost mtp-probe[1586]: bus: 2, device: 9 was not an MTP device >> Aug 7 18:00:01 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Main process exited, code=killed, status=15/TERM >> Aug 7 18:00:01 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Failed with result 'signal'. >> Aug 7 18:00:01 localhost systemd[1]: Stopped usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0. >> Aug 7 18:00:01 localhost audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=usb_modeswitch@2-1.4:1.0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed' >> Aug 7 18:00:01 localhost mtp-probe[1594]: checking bus 2, device 9: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 18:00:01 localhost systemd[1]: Starting usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0... >> Aug 7 18:00:01 localhost mtp-probe[1594]: bus: 2, device: 9 was not an MTP device >> Aug 7 18:00:01 localhost usb_modeswitch[1601]: switch device 12d1:1f1c on 002/009 >> Aug 7 18:00:01 localhost kernel: cdc_mbim 2-1.4:2.0: SET_NTB_FORMAT failed >> Aug 7 18:00:01 localhost kernel: cdc_mbim 2-1.4:2.0: bind() failure >> Aug 7 18:00:01 localhost kernel: usb 2-1.4: USB disconnect, device number 9 >> Aug 7 18:00:06 localhost kernel: usb 2-1.4: new high-speed USB device number 10 using ehci-pci >> Aug 7 18:00:06 localhost kernel: usb 2-1.4: New USB device found, idVendor=12d1, idProduct=1f1c, bcdDevice= 1.02 >> Aug 7 18:00:06 localhost kernel: usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >> Aug 7 18:00:06 localhost kernel: usb 2-1.4: Product: HUAWEI Mobile >> Aug 7 18:00:06 localhost kernel: usb 2-1.4: Manufacturer: Vodafone(Huawei) >> Aug 7 18:00:06 localhost kernel: usb 2-1.4: SerialNumber: FFFFFFFFFFFFFFFF >> Aug 7 18:00:06 localhost kernel: usb-storage 2-1.4:1.0: USB Mass Storage device detected >> Aug 7 18:00:06 localhost kernel: scsi host4: usb-storage 2-1.4:1.0 >> Aug 7 18:00:06 localhost mtp-probe[1611]: checking bus 2, device 10: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 18:00:06 localhost mtp-probe[1611]: bus: 2, device: 10 was not an MTP device >> Aug 7 18:00:06 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Main process exited, code=killed, status=15/TERM >> Aug 7 18:00:06 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Failed with result 'signal'. >> Aug 7 18:00:06 localhost systemd[1]: Stopped usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0. >> Aug 7 18:00:06 localhost audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=usb_modeswitch@2-1.4:1.0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed' >> Aug 7 18:00:06 localhost systemd[1]: Starting usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0... >> Aug 7 18:00:06 localhost mtp-probe[1620]: checking bus 2, device 10: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 18:00:06 localhost mtp-probe[1620]: bus: 2, device: 10 was not an MTP device >> Aug 7 18:00:07 localhost usb_modeswitch[1625]: switch device 12d1:1f1c on 002/010 >> Aug 7 18:00:07 localhost kernel: cdc_mbim 2-1.4:2.0: SET_NTB_FORMAT failed >> Aug 7 18:00:07 localhost kernel: cdc_mbim 2-1.4:2.0: bind() failure >> Aug 7 18:00:07 localhost kernel: usb 2-1.4: USB disconnect, device number 10 >> Aug 7 18:00:12 localhost kernel: usb 2-1.4: new high-speed USB device number 11 using ehci-pci >> Aug 7 18:00:12 localhost kernel: usb 2-1.4: New USB device found, idVendor=12d1, idProduct=1f1c, bcdDevice= 1.02 >> Aug 7 18:00:12 localhost kernel: usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >> Aug 7 18:00:12 localhost kernel: usb 2-1.4: Product: HUAWEI Mobile >> Aug 7 18:00:12 localhost kernel: usb 2-1.4: Manufacturer: Vodafone(Huawei) >> Aug 7 18:00:12 localhost kernel: usb 2-1.4: SerialNumber: FFFFFFFFFFFFFFFF >> Aug 7 18:00:12 localhost kernel: usb-storage 2-1.4:1.0: USB Mass Storage device detected >> Aug 7 18:00:12 localhost kernel: scsi host4: usb-storage 2-1.4:1.0 >> Aug 7 18:00:12 localhost mtp-probe[1633]: checking bus 2, device 11: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 18:00:12 localhost mtp-probe[1633]: bus: 2, device: 11 was not an MTP device >> Aug 7 18:00:12 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Main process exited, code=killed, status=15/TERM >> Aug 7 18:00:12 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Failed with result 'signal'. >> Aug 7 18:00:12 localhost systemd[1]: Stopped usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0. >> Aug 7 18:00:12 localhost audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=usb_modeswitch@2-1.4:1.0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed' >> Aug 7 18:00:12 localhost systemd[1]: Starting usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0... >> Aug 7 18:00:12 localhost mtp-probe[1643]: checking bus 2, device 11: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 18:00:12 localhost mtp-probe[1643]: bus: 2, device: 11 was not an MTP device >> Aug 7 18:00:12 localhost usb_modeswitch[1647]: switch device 12d1:1f1c on 002/011 >> Aug 7 18:00:13 localhost kernel: cdc_mbim 2-1.4:2.0: SET_NTB_FORMAT failed >> Aug 7 18:00:13 localhost kernel: cdc_mbim 2-1.4:2.0: bind() failure >> Aug 7 18:00:13 localhost kernel: usb 2-1.4: USB disconnect, device number 11 >> Aug 7 18:00:17 localhost kernel: usb 2-1.4: new high-speed USB device number 12 using ehci-pci >> Aug 7 18:00:17 localhost kernel: usb 2-1.4: New USB device found, idVendor=12d1, idProduct=1f1c, bcdDevice= 1.02 >> Aug 7 18:00:17 localhost kernel: usb 2-1.4: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >> Aug 7 18:00:17 localhost kernel: usb 2-1.4: Product: HUAWEI Mobile >> Aug 7 18:00:17 localhost kernel: usb 2-1.4: Manufacturer: Vodafone(Huawei) >> Aug 7 18:00:17 localhost kernel: usb 2-1.4: SerialNumber: FFFFFFFFFFFFFFFF >> Aug 7 18:00:17 localhost kernel: usb-storage 2-1.4:1.0: USB Mass Storage device detected >> Aug 7 18:00:17 localhost kernel: scsi host4: usb-storage 2-1.4:1.0 >> Aug 7 18:00:17 localhost mtp-probe[1654]: checking bus 2, device 12: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 18:00:17 localhost mtp-probe[1654]: bus: 2, device: 12 was not an MTP device >> Aug 7 18:00:17 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Main process exited, code=killed, status=15/TERM >> Aug 7 18:00:17 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Failed with result 'signal'. >> Aug 7 18:00:17 localhost systemd[1]: Stopped usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0. >> Aug 7 18:00:17 localhost audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=usb_modeswitch@2-1.4:1.0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed' >> Aug 7 18:00:17 localhost systemd[1]: Starting usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0... >> Aug 7 18:00:17 localhost mtp-probe[1663]: checking bus 2, device 12: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 18:00:17 localhost mtp-probe[1663]: bus: 2, device: 12 was not an MTP device >> Aug 7 18:00:18 localhost usb_modeswitch[1668]: switch device 12d1:1f1c on 002/012 >> Aug 7 18:00:18 localhost kernel: cdc_mbim 2-1.4:2.0: SET_NTB_FORMAT failed >> Aug 7 18:00:18 localhost kernel: cdc_mbim 2-1.4:2.0: bind() failure >> Aug 7 18:00:18 localhost kernel: usb 2-1.4: USB disconnect, device number 12 >> Aug 7 18:00:25 localhost kernel: usb 2-1.4: new high-speed USB device number 13 using ehci-pci >> Aug 7 18:00:25 localhost kernel: usb 2-1.4: New USB device found, idVendor=12d1, idProduct=14fb, bcdDevice= 1.02 >> Aug 7 18:00:25 localhost kernel: usb 2-1.4: New USB device strings: Mfr=2, Product=1, SerialNumber=0 >> Aug 7 18:00:25 localhost kernel: usb 2-1.4: Product: HUAWEI Mobile >> Aug 7 18:00:25 localhost kernel: usb 2-1.4: Manufacturer: HUAWEI Technology >> Aug 7 18:00:25 localhost mtp-probe[1672]: checking bus 2, device 13: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 18:00:25 localhost mtp-probe[1672]: bus: 2, device: 13 was not an MTP device >> Aug 7 18:00:25 localhost kernel: usbcore: registered new interface driver option >> Aug 7 18:00:25 localhost kernel: usbserial: USB Serial support registered for GSM modem (1-port) >> Aug 7 18:00:25 localhost kernel: option 2-1.4:1.0: GSM modem (1-port) converter detected >> Aug 7 18:00:25 localhost kernel: usb 2-1.4: GSM modem (1-port) converter now attached to ttyUSB0 >> Aug 7 18:00:25 localhost kernel: option 2-1.4:1.1: GSM modem (1-port) converter detected >> Aug 7 18:00:25 localhost kernel: usb 2-1.4: GSM modem (1-port) converter now attached to ttyUSB1 >> Aug 7 18:00:25 localhost mtp-probe[1679]: checking bus 2, device 13: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4" >> Aug 7 18:00:25 localhost mtp-probe[1679]: bus: 2, device: 13 was not an MTP device >> Aug 7 18:00:38 localhost systemd[1]: usb_modeswitch@2-1.4:1.0.service: Deactivated successfully. >> Aug 7 18:00:38 localhost systemd[1]: Finished usb_modeswitch@2-1.4:1.0.service - USB_ModeSwitch_2-1.4:1.0. >> Aug 7 18:00:38 localhost audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=usb_modeswitch@2-1.4:1.0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' >> Aug 7 18:00:38 localhost audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=usb_modeswitch@2-1.4:1.0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' >> Aug 7 18:00:48 localhost systemd[1149]: Starting grub-boot-success.service - Mark boot as successful... >> Aug 7 18:00:48 localhost systemd[1149]: Finished grub-boot-success.service - Mark boot as successful. >> Aug 7 18:00:57 localhost ModemManager[936]: <info> [device /sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4] creating modem with plugin 'huawei' and '2' ports >> Aug 7 18:00:57 localhost ModemManager[936]: <warn> [plugin/huawei] could not grab port ttyUSB0: Cannot add port 'tty/ttyUSB0', unhandled port type >> Aug 7 18:00:57 localhost ModemManager[936]: <warn> [plugin/huawei] could not grab port ttyUSB1: Cannot add port 'tty/ttyUSB1', unhandled port type >> Aug 7 18:00:57 localhost ModemManager[936]: <warn> [base-manager] couldn't create modem for device '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.4': Failed to find primary AT port > > See the ticket for details and further comments. > > @S.Bonomar FYI: you might need to bisect this issue to get us to the > root of the problem. I also wonder if you used a vanilla 4.15 version or > Ubuntu's kernel (which might include a patch to make your device work). > But well, maybe the developers have a idea what's wrong here without > further debugging. They will know, I have no idea about this driver or > how it works. > > Moving on: > > If you're among the main recipients of this mail and not just CCed, > could you please look into the issue to get it fixed as per > https://docs.kernel.org/process/handling-regressions.html ? tia! > > Anyway, to ensure this is not forgotten lets get this tracked by the the > Linux kernel regression tracking bot: > > #regzbot introduced: v4.15..v4.19 > https://bugzilla.kernel.org/show_bug.cgi?id=216336 > #regzbot ignore-activity > > This isn't a regression? This issue or a fix for it are already > discussed somewhere else? It was fixed already? You want to clarify when > the regression started to happen? Or point out I got the title or > something else totally wrong? Then just reply -- ideally with also > telling regzbot about it, as explained here: > https://linux-regtracking.leemhuis.info/tracked-regression/ > > Reminder for developers: When fixing the issue, add 'Link:' tags > pointing to the report in bugzilla, as the kernel's documentation calls > for; above page explains why this is important for tracked regressions. > > Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) > > P.S.: As the Linux kernel's regression tracker I deal with a lot of > reports and sometimes miss something important when writing mails like > this. If that's the case here, don't hesitate to tell me in a public > reply, it's in everyone's interest to set the public record straight. #regzbot ignore-activity
