[SOLVED] Kernel ejects the USB device

Dênio · 04-24-2019, 09:22 AM

Dear

I have a question on the Slackware distribution since version 14.2, because every time I plug in a Gertec PPC920 USB device the Kernel ejects the device as if it is no longer plugged in.
I did tests on Linux Slackware 14.1 and also other distributions like Linux Mint 19 and work without problems, already with Slackware 14.2 and also with the current version of Slackware the problem occurs.

Monitoring the UDEV we can see:

udevadm monitor
monitor will print the received events for:

Code:

UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

KERNEL[3626.013100] add /devices/pci0000:00/0000:00:1d.1/usb3/3-1 (usb)
KERNEL[3626.015922] add /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0 (usb)
KERNEL[3626.017935] add /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0/tty/ttyACM0 (tty)
KERNEL[3626.017993] bind /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0 (usb)
KERNEL[3626.018037] add /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.1 (usb)
KERNEL[3626.018078] bind /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.1 (usb)
KERNEL[3626.018127] bind /devices/pci0000:00/0000:00:1d.1/usb3/3-1 (usb)
KERNEL[3626.086078] remove /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0/tty/ttyACM0 (tty)
KERNEL[3626.086128] unbind /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.1 (usb)
KERNEL[3626.086160] unbind /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0 (usb)
KERNEL[3626.086192] remove /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0 (usb)
KERNEL[3626.086225] remove /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.1 (usb)
KERNEL[3626.086639] unbind /devices/pci0000:00/0000:00:1d.1/usb3/3-1 (usb)
KERNEL[3626.086690] remove /devices/pci0000:00/0000:00:1d.1/usb3/3-1 (usb)
UDEV [3626.538480] add /devices/pci0000:00/0000:00:1d.1/usb3/3-1 (usb)
UDEV [3626.545897] add /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.1 (usb)
UDEV [3626.545943] add /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0 (usb)
UDEV [3626.546245] bind /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.1 (usb)
UDEV [3626.547268] add /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0/tty/ttyACM0 (tty)
UDEV [3626.547527] bind /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0 (usb)
UDEV [3626.547720] bind /devices/pci0000:00/0000:00:1d.1/usb3/3-1 (usb)
UDEV [3626.548004] unbind /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.1 (usb)
UDEV [3626.548567] remove /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0/tty/ttyACM0 (tty)
UDEV [3626.548612] remove /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.1 (usb)
UDEV [3626.548931] unbind /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0 (usb)
UDEV [3626.549360] remove /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0 (usb)
UDEV [3626.549570] unbind /devices/pci0000:00/0000:00:1d.1/usb3/3-1 (usb)
UDEV [3626.550063] remove /devices/pci0000:00/0000:00:1d.1/usb3/3-1 (usb)

Anyone with any suggestions !?
Thank you!

pan64 · 04-25-2019, 02:19 AM

I would rather say: GUI or some other tool/app initiates that eject, these are only just the low level events.

Dênio · 04-25-2019, 05:49 AM

I'm not running any applications!
Simply plug the device and it is already ejected automatically in the versions mentioned.

# dmesg

[ 900.329260] usb 3-2: new full-speed USB device number 7 using uhci_hcd
[ 900.499278] usb 3-2: Dual-Role OTG device on non-HNP port
[ 900.502284] usb 3-2: New USB device found, idVendor=1753, idProduct=c902, bcdDevice= 0.01
[ 900.502288] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 900.502292] usb 3-2: Product: PPC920 Pinpad Terminal
[ 900.502295] usb 3-2: Manufacturer: GERTEC
[ 900.505428] cdc_acm 3-2:1.0: ttyACM0: USB ACM device
[ 900.507994] usb 3-2: USB disconnect, device number 7

dc.901 · 04-25-2019, 06:03 AM

Maybe you already tried these:
- Try the USB device in different computer, does it work?
- On your Slackware machine, plugin a different USB device; does it also get ejected?
- Try different USB port on Slackware machine?

Dênio · 04-25-2019, 06:15 AM

dc.901 thanks!

- Try the USB device in different computer, does it work? YES (3 computers)
- On your Slackware machine, plugin a different USB device; does it also get ejected? Others devices no problem
- Try different USB port on Slackware machine? Test in all ports

Complementing:

I'm doing the tests with 3 different machines
And using 2 different devices: Pinpad - Geretec PPC920 and also PPC910

Only in the cases of Slackware 14.2 and in the current version the problem is presented.

https://www.gertec.com.br/produtos/ppc920/
https://www.gertec.com.br/produtos/ppc910/

The devices are listed in /usr/share/usb.ids and /lib/udev/hwbd.d/20-usb-vendor-model.hwdb

dmesg after connecting device

[ 117.487030] usb 3-1: new full-speed USB device number 2 using uhci_hcd
[ 117.657054] usb 3-1: Dual-Role OTG device on non-HNP port
[ 117.660055] usb 3-1: New USB device found, idVendor=1753, idProduct=c902, bcdDevice= 0.01
[ 117.660059] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 117.660063] usb 3-1: Product: PPC920 Pinpad Terminal
[ 117.660066] usb 3-1: Manufacturer: GERTEC
[ 117.797099] usb 3-1: USB disconnect, device number 2
[ 118.205187] usbcore: registered new interface driver cdc_acm
[ 118.205189] cdc_acm: USB Abstract Control Model driver for USB modems and ISDN adapters

[ 962.289117] usb 3-2: new full-speed USB device number 3 using uhci_hcd
[ 962.459140] usb 3-2: Dual-Role OTG device on non-HNP port
[ 962.462142] usb 3-2: New USB device found, idVendor=1753, idProduct=c901, bcdDevice= 0.01
[ 962.462146] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 962.462150] usb 3-2: Product: PPC900 Pinpad Terminal
[ 962.462153] usb 3-2: Manufacturer: GERTEC
[ 962.465307] cdc_acm 3-2:1.0: ttyACM0: USB ACM device
[ 962.467523] usb 3-2: USB disconnect, device number 3

Dênio · 04-26-2019, 06:32 AM

By doing several tests, I realize that I have a problem with Slackware packaging.
Using 2 computers for the tests, follow the results:

1. Computer with USB only 1.10 - No USB device works with this device.
2. Computer with USB 2.0 and 3.0 - Some USB ports work only with this device.

Now using Linux Mint 19 - Live on the same computers
1. Computer with USB only 1.10 - All USB ports working with the device.
2. Computer with USB 2.0 and 3.0 - Also all USB ports working with the device.

Slackware simply ejects the device and ignores any rule it places for the usb device.

--------------------- LINUX MINT 19 LIVE ---------------------

root@mint:~# udevadm monitor
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

KERNEL[1163.504310] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1 (usb)
KERNEL[1163.507162] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0 (usb)
KERNEL[1163.509131] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/tty/ttyACM0 (tty)
KERNEL[1163.509220] bind /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0 (usb)
KERNEL[1163.509283] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.1 (usb)
KERNEL[1163.509356] bind /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.1 (usb)
KERNEL[1163.509447] bind /devices/pci0000:00/0000:00:1d.0/usb2/2-1 (usb)
UDEV [1163.821591] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1 (usb)
UDEV [1163.827317] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.1 (usb)
UDEV [1163.830945] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0 (usb)
UDEV [1163.833829] bind /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.1 (usb)
UDEV [1163.837665] add /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/tty/ttyACM0 (tty)
UDEV [1163.849951] bind /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0 (usb)
UDEV [1163.854187] bind /devices/pci0000:00/0000:00:1d.0/usb2/2-1 (usb)
KERNEL[1164.516377] add /devices/parport0/ppdev0.0 (parport)
KERNEL[1164.517050] bind /devices/parport0/ppdev0.0 (parport)
KERNEL[1164.517500] unbind /devices/parport0/ppdev0.0 (parport)
KERNEL[1164.517801] remove /devices/parport0/ppdev0.0 (parport)
UDEV [1164.518488] add /devices/parport0/ppdev0.0 (parport)
UDEV [1164.519576] bind /devices/parport0/ppdev0.0 (parport)
UDEV [1164.520484] unbind /devices/parport0/ppdev0.0 (parport)
UDEV [1164.521255] remove /devices/parport0/ppdev0.0 (parport)
KERNEL[1168.910406] add /devices/parport0/ppdev0.0 (parport)
KERNEL[1168.910458] bind /devices/parport0/ppdev0.0 (parport)
UDEV [1168.913998] add /devices/parport0/ppdev0.0 (parport)
UDEV [1168.915360] bind /devices/parport0/ppdev0.0 (parport)
KERNEL[1168.956354] unbind /devices/parport0/ppdev0.0 (parport)
KERNEL[1168.957455] remove /devices/parport0/ppdev0.0 (parport)
UDEV [1168.961207] unbind /devices/parport0/ppdev0.0 (parport)
UDEV [1168.962744] remove /devices/parport0/ppdev0.0 (parport)

-------------------- dmesg --------------------------------

[ 1163.335657] usb 2-1: new full-speed USB device number 4 using uhci_hcd
[ 1163.523543] usb 2-1: New USB device found, idVendor=1753, idProduct=c902
[ 1163.523548] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1163.523552] usb 2-1: Product: PPC920 Pinpad Terminal
[ 1163.523556] usb 2-1: Manufacturer: GERTEC
[ 1163.526705] cdc_acm 2-1:1.0: ttyACM0: USB ACM device

Anyone with any suggestions?
Thank you!

pan64 · 04-29-2019, 03:03 AM

probably the filesystem/device could not be recognized properly, that's why was it ejected immediately. It looks like a [missing] device driver issue or something similar.
Again, these are just the low level events, you need to find (in /var/log or ??) more related info.

Dênio · 04-30-2019, 01:48 PM

Dear

Solution to the problem is to just recompile the kernel by unchecking the CONFIG_USB_OTG option.

The .config file in the default Slackware build looks like this:
CONFIG_USB_OTG = y

The .config file in the build looks like this:
# CONFIG_USB_OTG is not set

Questions to recompile the kernel use the link:
https://edersoncorbari.github.io/tut...-build-kernel/

No need to recompile modules!

After compiling the kernel update the files:
vmlinuz-huge-smp-4.4.14-smp
System.map-huge-smp-4.4.14-smp
config-huge-smp-4.4.14-smp

And rewrite lilo again.