* /dev/ttyUSB0 file disappears on Ubuntu 22.04 @ 2022-06-01 16:37 TonicLab.ru 2022-06-02 6:02 ` Greg KH 0 siblings, 1 reply; 5+ messages in thread From: TonicLab.ru @ 2022-06-01 16:37 UTC (permalink / raw) To: linux-usb Hi all, This problem appeared on a freshly installed Ubuntu 22.04 desktop. Not sure I need to post this here. When I'm attaching a ftdi device into usb everything looks great but there's no /dev/ttyUSB0 file. Seems it created and then disappeared. I tried to remove brltty package (as some recommends on the net) but it didn't help. The same ftdi device works on older Ubuntu version w/o any problems. I'm having this in syslog: Jun 1 16:58:09 qgs-comp kernel: [ 538.642086] usb 2-1.5: new full-speed USB device number 5 using ehci-pci Jun 1 16:58:10 qgs-comp kernel: [ 538.756437] usb 2-1.5: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00 Jun 1 16:58:10 qgs-comp kernel: [ 538.756445] usb 2-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Jun 1 16:58:10 qgs-comp kernel: [ 538.756448] usb 2-1.5: Product: USB Serial Jun 1 16:58:10 qgs-comp kernel: [ 538.756450] usb 2-1.5: Manufacturer: FTDI Jun 1 16:58:10 qgs-comp kernel: [ 538.756452] usb 2-1.5: SerialNumber: FT0KKBIF Jun 1 16:58:10 qgs-comp kernel: [ 538.759677] ftdi_sio 2-1.5:1.0: FTDI USB Serial Device converter detected Jun 1 16:58:10 qgs-comp kernel: [ 538.759713] usb 2-1.5: Detected FT232RL Jun 1 16:58:10 qgs-comp kernel: [ 538.760546] usb 2-1.5: FTDI USB Serial Device converter now attached to ttyUSB0 Jun 1 16:58:01 qgs-comp colord-sane: message repeated 2 times: [ io/hpmud/musb.c 2101: Invalid usb_open: Permission denied] Jun 1 16:58:10 qgs-comp mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5" Jun 1 16:58:10 qgs-comp mtp-probe: bus: 2, device: 5 was not an MTP device Jun 1 16:58:10 qgs-comp systemd-udevd[5394]: 2-1.5: Failed to create/update device symlink '/dev/ttyUSB0', ignoring: File exists Jun 1 16:58:10 qgs-comp snapd[942]: hotplug.go:199: hotplug device add event ignored, enable experimental.hotplug Jun 1 16:58:10 qgs-comp mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5" Jun 1 16:58:10 qgs-comp mtp-probe: bus: 2, device: 5 was not an MTP device Jun 1 16:58:10 qgs-comp colord-sane: io/hpmud/musb.c 2101: Invalid usb_open: Permission denied I noticed this line: Jun 1 16:58:10 qgs-comp systemd-udevd[5394]: 2-1.5: Failed to create/update device symlink '/dev/ttyUSB0', ignoring: File exists Why is it happening? There's no /dev/ttyUSB0 neither before nor after I attach ftdi device to a USB port. thanks ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: /dev/ttyUSB0 file disappears on Ubuntu 22.04 2022-06-01 16:37 /dev/ttyUSB0 file disappears on Ubuntu 22.04 TonicLab.ru @ 2022-06-02 6:02 ` Greg KH 2022-06-02 8:47 ` Yuri 0 siblings, 1 reply; 5+ messages in thread From: Greg KH @ 2022-06-02 6:02 UTC (permalink / raw) To: TonicLab.ru; +Cc: linux-usb On Wed, Jun 01, 2022 at 07:37:45PM +0300, TonicLab.ru wrote: > Hi all, > > This problem appeared on a freshly installed Ubuntu 22.04 desktop. Not sure > I need to post this here. > > When I'm attaching a ftdi device into usb everything looks great but there's > no /dev/ttyUSB0 file. Seems it created and then disappeared. I tried to > remove brltty package (as some recommends on the net) but it didn't help. > The same ftdi device works on older Ubuntu version w/o any problems. > > I'm having this in syslog: > Jun 1 16:58:09 qgs-comp kernel: [ 538.642086] usb 2-1.5: new full-speed > USB device number 5 using ehci-pci > Jun 1 16:58:10 qgs-comp kernel: [ 538.756437] usb 2-1.5: New USB device > found, idVendor=0403, idProduct=6001, bcdDevice= 6.00 > Jun 1 16:58:10 qgs-comp kernel: [ 538.756445] usb 2-1.5: New USB device > strings: Mfr=1, Product=2, SerialNumber=3 > Jun 1 16:58:10 qgs-comp kernel: [ 538.756448] usb 2-1.5: Product: USB > Serial > Jun 1 16:58:10 qgs-comp kernel: [ 538.756450] usb 2-1.5: Manufacturer: > FTDI > Jun 1 16:58:10 qgs-comp kernel: [ 538.756452] usb 2-1.5: SerialNumber: > FT0KKBIF > Jun 1 16:58:10 qgs-comp kernel: [ 538.759677] ftdi_sio 2-1.5:1.0: FTDI USB > Serial Device converter detected > Jun 1 16:58:10 qgs-comp kernel: [ 538.759713] usb 2-1.5: Detected FT232RL > Jun 1 16:58:10 qgs-comp kernel: [ 538.760546] usb 2-1.5: FTDI USB Serial > Device converter now attached to ttyUSB0 It was created here. > Jun 1 16:58:01 qgs-comp colord-sane: message repeated 2 times: [ > io/hpmud/musb.c 2101: Invalid usb_open: Permission denied] > Jun 1 16:58:10 qgs-comp mtp-probe: checking bus 2, device 5: > "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5" > Jun 1 16:58:10 qgs-comp mtp-probe: bus: 2, device: 5 was not an MTP device > Jun 1 16:58:10 qgs-comp systemd-udevd[5394]: 2-1.5: Failed to create/update > device symlink '/dev/ttyUSB0', ignoring: File exists See it's still there. > Jun 1 16:58:10 qgs-comp snapd[942]: hotplug.go:199: hotplug device add > event ignored, enable experimental.hotplug > Jun 1 16:58:10 qgs-comp mtp-probe: checking bus 2, device 5: > "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5" > Jun 1 16:58:10 qgs-comp mtp-probe: bus: 2, device: 5 was not an MTP device > Jun 1 16:58:10 qgs-comp colord-sane: io/hpmud/musb.c 2101: Invalid > usb_open: Permission denied I do not see it going away. Are you sure it is gone? Any further log messages? thanks, greg k-h ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: /dev/ttyUSB0 file disappears on Ubuntu 22.04 2022-06-02 6:02 ` Greg KH @ 2022-06-02 8:47 ` Yuri 2022-06-03 6:44 ` Greg KH 0 siblings, 1 reply; 5+ messages in thread From: Yuri @ 2022-06-02 8:47 UTC (permalink / raw) To: Greg KH; +Cc: linux-usb Thanks for a quick reply, Greg. No, no error here. No matter when I execute this on my PC under Ubuntu 22.04 ls -l /dev/ttyUSB* I get this ls: cannot access '/dev/ttyUSB*': No such file or directory I made this log after attaching and removing the device. Here's dmesg output [ 2276.613198] usb 2-1.5: new full-speed USB device number 5 using ehci-pci [ 2276.727502] usb 2-1.5: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00 [ 2276.727511] usb 2-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 2276.727514] usb 2-1.5: Product: USB Serial [ 2276.727516] usb 2-1.5: Manufacturer: FTDI [ 2276.727518] usb 2-1.5: SerialNumber: FT0KKBIF [ 2276.729550] ftdi_sio 2-1.5:1.0: FTDI USB Serial Device converter detected [ 2276.729626] usb 2-1.5: Detected FT232RL [ 2276.730487] usb 2-1.5: FTDI USB Serial Device converter now attached to ttyUSB0 [ 3173.152415] usb 2-1.5: USB disconnect, device number 5 [ 3173.152974] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0 [ 3173.153005] ftdi_sio 2-1.5:1.0: device disconnected [ 3182.847132] kauditd_printk_skb: 1 callbacks suppressed [ 3396.861511] usb 2-1.5: new full-speed USB device number 6 using ehci-pci [ 3396.975858] usb 2-1.5: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00 [ 3396.975866] usb 2-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 3396.975870] usb 2-1.5: Product: USB Serial [ 3396.975872] usb 2-1.5: Manufacturer: FTDI [ 3396.975874] usb 2-1.5: SerialNumber: FT0KKBIF [ 3396.978651] ftdi_sio 2-1.5:1.0: FTDI USB Serial Device converter detected [ 3396.978714] usb 2-1.5: Detected FT232RL [ 3396.979568] usb 2-1.5: FTDI USB Serial Device converter now attached to ttyUSB0 [ 3553.309826] usb 2-1.5: USB disconnect, device number 6 [ 3553.310371] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0 [ 3553.310404] ftdi_sio 2-1.5:1.0: device disconnected And here's the syslog output echoing log above Jun 2 10:41:54 qgs-comp kernel: [ 3173.152415] usb 2-1.5: USB disconnect, device number 5 Jun 2 10:41:54 qgs-comp kernel: [ 3173.152974] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0 Jun 2 10:41:54 qgs-comp kernel: [ 3173.153005] ftdi_sio 2-1.5:1.0: device disconnected Jun 2 10:42:02 qgs-comp systemd[1786]: Started Application launched by gnome-shell. Jun 2 10:42:03 qgs-comp libreoffice-writer.desktop[7821]: Warning: failed to launch javaldx - java may not function correctly Jun 2 10:42:04 qgs-comp kernel: [ 3182.847132] kauditd_printk_skb: 1 callbacks suppressed Jun 2 10:42:04 qgs-comp kernel: [ 3182.847137] audit: type=1400 audit(1654155724.011:126): apparmor="ALLOWED" operation="file_mmap" profile="libreoffice-soffice" name="/tmp/.glQ6PDw2" pid=7839 comm="soffice.bin" requested_mask="m" denied_mask="m" fsuid=1000 ouid=1000 Jun 2 10:42:04 qgs-comp kernel: [ 3183.137037] audit: type=1400 audit(1654155724.303:127): apparmor="ALLOWED" operation="connect" profile="libreoffice-soffice" name="/run/user/1000/at-spi/bus_1" pid=7838 comm="soffice.bin" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=1000 Jun 2 10:42:04 qgs-comp kernel: [ 3183.137207] audit: type=1400 audit(1654155724.303:128): apparmor="ALLOWED" operation="file_perm" profile="libreoffice-soffice" name="/run/user/1000/at-spi/bus_1" pid=7838 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000 Jun 2 10:42:04 qgs-comp kernel: [ 3183.137218] audit: type=1400 audit(1654155724.303:129): apparmor="ALLOWED" operation="file_perm" profile="libreoffice-soffice" name="/run/user/1000/at-spi/bus_1" pid=7838 comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000 Jun 2 10:42:14 qgs-comp systemd[1786]: app-gnome-libreoffice\x2dwriter-7821.scope: Consumed 3.025s CPU time. Jun 2 10:45:38 qgs-comp kernel: [ 3396.861511] usb 2-1.5: new full-speed USB device number 6 using ehci-pci Jun 2 10:45:38 qgs-comp kernel: [ 3396.975858] usb 2-1.5: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00 Jun 2 10:45:38 qgs-comp kernel: [ 3396.975866] usb 2-1.5: New USB device strings: Mfr=1, Product=2, SerialNumber=3 Jun 2 10:45:38 qgs-comp kernel: [ 3396.975870] usb 2-1.5: Product: USB Serial Jun 2 10:45:38 qgs-comp kernel: [ 3396.975872] usb 2-1.5: Manufacturer: FTDI Jun 2 10:45:38 qgs-comp kernel: [ 3396.975874] usb 2-1.5: SerialNumber: FT0KKBIF Jun 2 10:45:38 qgs-comp kernel: [ 3396.978651] ftdi_sio 2-1.5:1.0: FTDI USB Serial Device converter detected Jun 2 10:45:38 qgs-comp kernel: [ 3396.978714] usb 2-1.5: Detected FT232RL Jun 2 10:45:38 qgs-comp kernel: [ 3396.979568] usb 2-1.5: FTDI USB Serial Device converter now attached to ttyUSB0 Jun 2 10:45:38 qgs-comp mtp-probe: checking bus 2, device 6: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5" Jun 2 10:45:38 qgs-comp mtp-probe: bus: 2, device: 6 was not an MTP device Jun 2 10:45:38 qgs-comp systemd-udevd[7907]: 2-1.5: Failed to create/update device symlink '/dev/ttyUSB0', ignoring: File exists Jun 2 10:45:38 qgs-comp snapd[938]: hotplug.go:199: hotplug device add event ignored, enable experimental.hotplug Jun 2 10:45:38 qgs-comp mtp-probe: checking bus 2, device 6: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5" Jun 2 10:45:38 qgs-comp mtp-probe: bus: 2, device: 6 was not an MTP device Jun 2 10:45:40 qgs-comp ModemManager[1055]: <info> [base-manager] couldn't check support for device '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5': not supported by any plugin Jun 2 10:45:47 qgs-comp kernel: [ 3406.230869] [UFW BLOCK] IN=enp5s0 OUT= MAC=01:00:5e:00:00:01:c4:6e:1f:70:4f:f4:08:00 SRC=192.168.0.1 DST=224.0.0.1 LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 Jun 2 10:46:34 qgs-comp systemd[1786]: Started Application launched by gnome-shell. Jun 2 10:46:34 qgs-comp systemd[1786]: Started VTE child process 7940 launched by gnome-terminal-server process 5736. Jun 2 10:46:34 qgs-comp gnome-shell[2070]: Can't update stage views actor <unnamed>[<MetaWindowGroup>:0x55cea707c320] is on because it needs an allocation. Jun 2 10:46:34 qgs-comp gnome-shell[2070]: Can't update stage views actor <unnamed>[<MetaWindowActorX11>:0x55ceb6917ed0] is on because it needs an allocation. Jun 2 10:46:34 qgs-comp gnome-shell[2070]: Can't update stage views actor <unnamed>[<MetaSurfaceActorX11>:0x55cea8afc6c0] is on because it needs an allocation. Jun 2 10:46:37 qgs-comp systemd[1786]: Started Application launched by gnome-shell. Jun 2 10:46:37 qgs-comp systemd[1786]: Started VTE child process 7958 launched by gnome-terminal-server process 5736. Jun 2 10:46:37 qgs-comp gnome-shell[2070]: Can't update stage views actor <unnamed>[<MetaWindowGroup>:0x55cea707c320] is on because it needs an allocation. Jun 2 10:46:37 qgs-comp gnome-shell[2070]: Can't update stage views actor <unnamed>[<MetaWindowActorX11>:0x55cea8e32360] is on because it needs an allocation. Jun 2 10:46:37 qgs-comp gnome-shell[2070]: Can't update stage views actor <unnamed>[<MetaSurfaceActorX11>:0x55cea8afca40] is on because it needs an allocation. Jun 2 10:48:14 qgs-comp kernel: [ 3553.309826] usb 2-1.5: USB disconnect, device number 6 Jun 2 10:48:14 qgs-comp kernel: [ 3553.310371] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0 Jun 2 10:48:14 qgs-comp kernel: [ 3553.310404] ftdi_sio 2-1.5:1.0: device disconnected No problems on the same PC working under Ubuntu 18.04 and 16.04 whatsoever: ls -l /dev/ttyUSB* crw-rw---- 1 root dialout 188, 0 Jun 2 10:36 /dev/ttyUSB0 > > I do not see it going away. > > Are you sure it is gone? Any further log messages? > > thanks, > > greg k-h ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: /dev/ttyUSB0 file disappears on Ubuntu 22.04 2022-06-02 8:47 ` Yuri @ 2022-06-03 6:44 ` Greg KH 2022-06-04 5:31 ` Yuri 0 siblings, 1 reply; 5+ messages in thread From: Greg KH @ 2022-06-03 6:44 UTC (permalink / raw) To: Yuri; +Cc: linux-usb On Thu, Jun 02, 2022 at 11:47:50AM +0300, Yuri wrote: > Thanks for a quick reply, Greg. No, no error here. No matter when I execute > this on my PC under Ubuntu 22.04 > > ls -l /dev/ttyUSB* > > I get this > > ls: cannot access '/dev/ttyUSB*': No such file or directory Is the device node actually there? What does /dev/serial/ contain? > I made this log after attaching and removing the device. Here's dmesg output > > [ 2276.613198] usb 2-1.5: new full-speed USB device number 5 using ehci-pci > [ 2276.727502] usb 2-1.5: New USB device found, idVendor=0403, > idProduct=6001, bcdDevice= 6.00 > [ 2276.727511] usb 2-1.5: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > [ 2276.727514] usb 2-1.5: Product: USB Serial > [ 2276.727516] usb 2-1.5: Manufacturer: FTDI > [ 2276.727518] usb 2-1.5: SerialNumber: FT0KKBIF > [ 2276.729550] ftdi_sio 2-1.5:1.0: FTDI USB Serial Device converter detected > [ 2276.729626] usb 2-1.5: Detected FT232RL > [ 2276.730487] usb 2-1.5: FTDI USB Serial Device converter now attached to > ttyUSB0 > [ 3173.152415] usb 2-1.5: USB disconnect, device number 5 > [ 3173.152974] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now > disconnected from ttyUSB0 > [ 3173.153005] ftdi_sio 2-1.5:1.0: device disconnected > [ 3182.847132] kauditd_printk_skb: 1 callbacks suppressed > [ 3396.861511] usb 2-1.5: new full-speed USB device number 6 using ehci-pci > [ 3396.975858] usb 2-1.5: New USB device found, idVendor=0403, > idProduct=6001, bcdDevice= 6.00 > [ 3396.975866] usb 2-1.5: New USB device strings: Mfr=1, Product=2, > SerialNumber=3 > [ 3396.975870] usb 2-1.5: Product: USB Serial > [ 3396.975872] usb 2-1.5: Manufacturer: FTDI > [ 3396.975874] usb 2-1.5: SerialNumber: FT0KKBIF > [ 3396.978651] ftdi_sio 2-1.5:1.0: FTDI USB Serial Device converter detected > [ 3396.978714] usb 2-1.5: Detected FT232RL > [ 3396.979568] usb 2-1.5: FTDI USB Serial Device converter now attached to > ttyUSB0 > [ 3553.309826] usb 2-1.5: USB disconnect, device number 6 > [ 3553.310371] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now > disconnected from ttyUSB0 > [ 3553.310404] ftdi_sio 2-1.5:1.0: device disconnected > > > And here's the syslog output echoing log above > > Jun 2 10:41:54 qgs-comp kernel: [ 3173.152415] usb 2-1.5: USB disconnect, > device number 5 > Jun 2 10:41:54 qgs-comp kernel: [ 3173.152974] ftdi_sio ttyUSB0: FTDI USB > Serial Device converter now disconnected from ttyUSB0 > Jun 2 10:41:54 qgs-comp kernel: [ 3173.153005] ftdi_sio 2-1.5:1.0: device > disconnected > Jun 2 10:42:02 qgs-comp systemd[1786]: Started Application launched by > gnome-shell. > Jun 2 10:42:03 qgs-comp libreoffice-writer.desktop[7821]: Warning: failed > to launch javaldx - java may not function correctly > Jun 2 10:42:04 qgs-comp kernel: [ 3182.847132] kauditd_printk_skb: 1 > callbacks suppressed > Jun 2 10:42:04 qgs-comp kernel: [ 3182.847137] audit: type=1400 > audit(1654155724.011:126): apparmor="ALLOWED" operation="file_mmap" > profile="libreoffice-soffice" name="/tmp/.glQ6PDw2" pid=7839 > comm="soffice.bin" requested_mask="m" denied_mask="m" fsuid=1000 ouid=1000 > Jun 2 10:42:04 qgs-comp kernel: [ 3183.137037] audit: type=1400 > audit(1654155724.303:127): apparmor="ALLOWED" operation="connect" > profile="libreoffice-soffice" name="/run/user/1000/at-spi/bus_1" pid=7838 > comm="soffice.bin" requested_mask="wr" denied_mask="wr" fsuid=1000 ouid=1000 > Jun 2 10:42:04 qgs-comp kernel: [ 3183.137207] audit: type=1400 > audit(1654155724.303:128): apparmor="ALLOWED" operation="file_perm" > profile="libreoffice-soffice" name="/run/user/1000/at-spi/bus_1" pid=7838 > comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000 > Jun 2 10:42:04 qgs-comp kernel: [ 3183.137218] audit: type=1400 > audit(1654155724.303:129): apparmor="ALLOWED" operation="file_perm" > profile="libreoffice-soffice" name="/run/user/1000/at-spi/bus_1" pid=7838 > comm="soffice.bin" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000 > Jun 2 10:42:14 qgs-comp systemd[1786]: > app-gnome-libreoffice\x2dwriter-7821.scope: Consumed 3.025s CPU time. > Jun 2 10:45:38 qgs-comp kernel: [ 3396.861511] usb 2-1.5: new full-speed > USB device number 6 using ehci-pci > Jun 2 10:45:38 qgs-comp kernel: [ 3396.975858] usb 2-1.5: New USB device > found, idVendor=0403, idProduct=6001, bcdDevice= 6.00 > Jun 2 10:45:38 qgs-comp kernel: [ 3396.975866] usb 2-1.5: New USB device > strings: Mfr=1, Product=2, SerialNumber=3 > Jun 2 10:45:38 qgs-comp kernel: [ 3396.975870] usb 2-1.5: Product: USB > Serial > Jun 2 10:45:38 qgs-comp kernel: [ 3396.975872] usb 2-1.5: Manufacturer: > FTDI > Jun 2 10:45:38 qgs-comp kernel: [ 3396.975874] usb 2-1.5: SerialNumber: > FT0KKBIF > Jun 2 10:45:38 qgs-comp kernel: [ 3396.978651] ftdi_sio 2-1.5:1.0: FTDI USB > Serial Device converter detected > Jun 2 10:45:38 qgs-comp kernel: [ 3396.978714] usb 2-1.5: Detected FT232RL > Jun 2 10:45:38 qgs-comp kernel: [ 3396.979568] usb 2-1.5: FTDI USB Serial > Device converter now attached to ttyUSB0 > Jun 2 10:45:38 qgs-comp mtp-probe: checking bus 2, device 6: > "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5" > Jun 2 10:45:38 qgs-comp mtp-probe: bus: 2, device: 6 was not an MTP device > Jun 2 10:45:38 qgs-comp systemd-udevd[7907]: 2-1.5: Failed to create/update > device symlink '/dev/ttyUSB0', ignoring: File exists > Jun 2 10:45:38 qgs-comp snapd[938]: hotplug.go:199: hotplug device add > event ignored, enable experimental.hotplug > Jun 2 10:45:38 qgs-comp mtp-probe: checking bus 2, device 6: > "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5" > Jun 2 10:45:38 qgs-comp mtp-probe: bus: 2, device: 6 was not an MTP device > Jun 2 10:45:40 qgs-comp ModemManager[1055]: <info> [base-manager] couldn't > check support for device > '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.5': not supported by any > plugin > Jun 2 10:45:47 qgs-comp kernel: [ 3406.230869] [UFW BLOCK] IN=enp5s0 OUT= > MAC=01:00:5e:00:00:01:c4:6e:1f:70:4f:f4:08:00 SRC=192.168.0.1 DST=224.0.0.1 > LEN=32 TOS=0x00 PREC=0xC0 TTL=1 ID=0 DF PROTO=2 > Jun 2 10:46:34 qgs-comp systemd[1786]: Started Application launched by > gnome-shell. > Jun 2 10:46:34 qgs-comp systemd[1786]: Started VTE child process 7940 > launched by gnome-terminal-server process 5736. > Jun 2 10:46:34 qgs-comp gnome-shell[2070]: Can't update stage views actor > <unnamed>[<MetaWindowGroup>:0x55cea707c320] is on because it needs an > allocation. > Jun 2 10:46:34 qgs-comp gnome-shell[2070]: Can't update stage views actor > <unnamed>[<MetaWindowActorX11>:0x55ceb6917ed0] is on because it needs an > allocation. > Jun 2 10:46:34 qgs-comp gnome-shell[2070]: Can't update stage views actor > <unnamed>[<MetaSurfaceActorX11>:0x55cea8afc6c0] is on because it needs an > allocation. > Jun 2 10:46:37 qgs-comp systemd[1786]: Started Application launched by > gnome-shell. > Jun 2 10:46:37 qgs-comp systemd[1786]: Started VTE child process 7958 > launched by gnome-terminal-server process 5736. > Jun 2 10:46:37 qgs-comp gnome-shell[2070]: Can't update stage views actor > <unnamed>[<MetaWindowGroup>:0x55cea707c320] is on because it needs an > allocation. > Jun 2 10:46:37 qgs-comp gnome-shell[2070]: Can't update stage views actor > <unnamed>[<MetaWindowActorX11>:0x55cea8e32360] is on because it needs an > allocation. > Jun 2 10:46:37 qgs-comp gnome-shell[2070]: Can't update stage views actor > <unnamed>[<MetaSurfaceActorX11>:0x55cea8afca40] is on because it needs an > allocation. > Jun 2 10:48:14 qgs-comp kernel: [ 3553.309826] usb 2-1.5: USB disconnect, > device number 6 > Jun 2 10:48:14 qgs-comp kernel: [ 3553.310371] ftdi_sio ttyUSB0: FTDI USB > Serial Device converter now disconnected from ttyUSB0 > Jun 2 10:48:14 qgs-comp kernel: [ 3553.310404] ftdi_sio 2-1.5:1.0: device > disconnected > > > No problems on the same PC working under Ubuntu 18.04 and 16.04 whatsoever: > > ls -l /dev/ttyUSB* > crw-rw---- 1 root dialout 188, 0 Jun 2 10:36 /dev/ttyUSB0 I think you are going to have to contact ubuntu for this issue and get support from them as it's their kernel and overall system configuration here, the kernel looks like it is working just fine. good luck! greg k-h ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: /dev/ttyUSB0 file disappears on Ubuntu 22.04 2022-06-03 6:44 ` Greg KH @ 2022-06-04 5:31 ` Yuri 0 siblings, 0 replies; 5+ messages in thread From: Yuri @ 2022-06-04 5:31 UTC (permalink / raw) To: Greg KH; +Cc: linux-usb >> >> ls: cannot access '/dev/ttyUSB*': No such file or directory > > Is the device node actually there? > > What does /dev/serial/ contain? > After I have a ftdi device attached I have cd /dev/serial ; ls -LR .: by-id by-path ./by-id: ls: cannot access './by-id/usb-FTDI_USB_Serial_FT0KKBIF-if00-port0': No such file or directory usb-FTDI_USB_Serial_FT0KKBIF-if00-port0 ./by-path: ls: cannot access './by-path/pci-0000:00:1d.0-usb-0:1.5:1.0-port0': No such file or directory pci-0000:00:1d.0-usb-0:1.5:1.0-port0 So the folders and links are there but there's no /dev/ttyUSB0 file >> No problems on the same PC working under Ubuntu 18.04 and 16.04 >> whatsoever: >> >> ls -l /dev/ttyUSB* >> crw-rw---- 1 root dialout 188, 0 Jun 2 10:36 /dev/ttyUSB0 > > I think you are going to have to contact ubuntu for this issue and get > support from them as it's their kernel and overall system configuration > here, the kernel looks like it is working just fine. Thanks for advice. Already opened a bug report on launchpad. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-06-04 5:32 UTC | newest] Thread overview: 5+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2022-06-01 16:37 /dev/ttyUSB0 file disappears on Ubuntu 22.04 TonicLab.ru 2022-06-02 6:02 ` Greg KH 2022-06-02 8:47 ` Yuri 2022-06-03 6:44 ` Greg KH 2022-06-04 5:31 ` Yuri
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