Connecting to a mobile router via USB

ioctlnetwork · 2015-07-28 14:05:06

Hi there! I have a Huawei E5330 plugged into a USB port. On the live media, it automatically connects to the router under the device name enp20s* (can't remember what exactly, but I can find out if it'll be helpful), which showed up along with my wlan card and eth card under the names wlp3s0 and enp2s0 respectively. In the fresh install, I installed dhcpcd and it initially worked out of the box; I admit I have no idea why. Now, however, the device doesn't even appear when I run

ip a

Instead, I just see my ethernet port, wifi card, and loopback, but it still shows up in

lsusb

.

Since it's a new install, I installed and removed a bunch of stuff, so I can't really narrow it down. Can anyone tell me how it worked in the first place or at least what to look for? Bonus points if you can tell me how I can get it to work again, but I'd really like to know what I'm missing? Do I need to install a firmware package or configure something? Cause, as I said earlier, it used to work without any meddling.

Last edited by ioctlnetwork (2015-07-28 14:16:12)

ewaller · 2015-07-28 14:30:17

Look at the output of dmesg before and after you plug in the device and post what the relevant lines that added to the output. Also, run journalctl -f and then plug in the device. Post the output.

ioctlnetwork · 2015-07-28 14:50:21

Thanks for responding

dmesg:

963a964,991
> [ 6706.196048] usb 3-2: new high-speed USB device number 6 using xhci_hcd
> [ 6706.430978] usb-storage 3-2:1.0: USB Mass Storage device detected
> [ 6706.431324] scsi host10: usb-storage 3-2:1.0
> [ 6707.446818] scsi 10:0:0:0: CD-ROM            HUAWEI   Mass Storage     2.31 PQ: 0 ANSI: 2
> [ 6707.447768] sr 10:0:0:0: [sr1] scsi-1 drive
> [ 6707.448105] sr 10:0:0:0: Attached scsi CD-ROM sr1
> [ 6707.469825] sr 10:0:0:0: [sr1] UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
> [ 6707.469833] sr 10:0:0:0: [sr1] Sense Key : 0x3 [current] 
> [ 6707.469836] sr 10:0:0:0: [sr1] ASC=0x11 ASCQ=0x0 
> [ 6707.469841] sr 10:0:0:0: [sr1] CDB: opcode=0x28 28 00 00 00 ff fe 00 00 02 00
> [ 6707.469845] blk_update_request: critical medium error, dev sr1, sector 262136
> [ 6707.481713] sr 10:0:0:0: [sr1] UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
> [ 6707.481720] sr 10:0:0:0: [sr1] Sense Key : 0x3 [current] 
> [ 6707.481724] sr 10:0:0:0: [sr1] ASC=0x11 ASCQ=0x0 
> [ 6707.481728] sr 10:0:0:0: [sr1] CDB: opcode=0x28 28 00 00 00 ff fe 00 00 02 00
> [ 6707.481731] blk_update_request: critical medium error, dev sr1, sector 262136
> [ 6707.481736] Buffer I/O error on dev sr1, logical block 32767, async page read
> [ 6707.508557] sr 10:0:0:0: [sr1] UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
> [ 6707.508564] sr 10:0:0:0: [sr1] Sense Key : 0x3 [current] 
> [ 6707.508567] sr 10:0:0:0: [sr1] ASC=0x11 ASCQ=0x0 
> [ 6707.508570] sr 10:0:0:0: [sr1] CDB: opcode=0x28 28 00 00 00 ff fc 00 00 02 00
> [ 6707.508573] blk_update_request: critical medium error, dev sr1, sector 262128
> [ 6707.521648] sr 10:0:0:0: [sr1] UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
> [ 6707.521655] sr 10:0:0:0: [sr1] Sense Key : 0x3 [current] 
> [ 6707.521659] sr 10:0:0:0: [sr1] ASC=0x11 ASCQ=0x0 
> [ 6707.521662] sr 10:0:0:0: [sr1] CDB: opcode=0x28 28 00 00 00 ff fc 00 00 02 00
> [ 6707.521666] blk_update_request: critical medium error, dev sr1, sector 262128
> [ 6707.521671] Buffer I/O error on dev sr1, logical block 32766, async page read

journalctl -f:

Jul 28 22:48:24 eberos kernel: usb 3-2: new high-speed USB device number 8 using xhci_hcd
Jul 28 22:48:24 eberos kernel: usb-storage 3-2:1.0: USB Mass Storage device detected
Jul 28 22:48:24 eberos kernel: scsi host12: usb-storage 3-2:1.0
Jul 28 22:48:25 eberos kernel: scsi 12:0:0:0: CD-ROM            HUAWEI   Mass Storage     2.31 PQ: 0 ANSI: 2
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] scsi-1 drive
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: Attached scsi CD-ROM sr1
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] Sense Key : 0x3 [current] 
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] ASC=0x11 ASCQ=0x0 
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] CDB: opcode=0x28 28 00 00 00 ff fe 00 00 02 00
Jul 28 22:48:25 eberos kernel: blk_update_request: critical medium error, dev sr1, sector 262136
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] Sense Key : 0x3 [current] 
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] ASC=0x11 ASCQ=0x0 
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] CDB: opcode=0x28 28 00 00 00 ff fe 00 00 02 00
Jul 28 22:48:25 eberos kernel: blk_update_request: critical medium error, dev sr1, sector 262136
Jul 28 22:48:25 eberos kernel: Buffer I/O error on dev sr1, logical block 32767, async page read
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] Sense Key : 0x3 [current] 
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] ASC=0x11 ASCQ=0x0 
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] CDB: opcode=0x28 28 00 00 00 ff fc 00 00 02 00
Jul 28 22:48:25 eberos kernel: blk_update_request: critical medium error, dev sr1, sector 262128
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] UNKNOWN(0x2003) Result: hostbyte=0x00 driverbyte=0x08
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] Sense Key : 0x3 [current] 
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] ASC=0x11 ASCQ=0x0 
Jul 28 22:48:25 eberos kernel: sr 12:0:0:0: [sr1] CDB: opcode=0x28 28 00 00 00 ff fc 00 00 02 00
Jul 28 22:48:25 eberos kernel: blk_update_request: critical medium error, dev sr1, sector 262128
Jul 28 22:48:25 eberos kernel: Buffer I/O error on dev sr1, logical block 32766, async page read

ewaller · 2015-07-28 14:58:57

Your device is mounting as a CD ROM. More and more manufacturers are playing tricks to appear as a CD ROM so that drivers can be automatically installed on certain operating systems from the US Pacific Northwest. After installing the drivers are installed, those drivers cause the device to do a USB bus disconnect and re-enumerate where they present themselves as the device they really are.

See this thread. You need look into usb_modeswitch.

Arch Linux

#1 2015-07-28 14:05:06

Connecting to a mobile router via USB

#2 2015-07-28 14:30:17

Re: Connecting to a mobile router via USB

#3 2015-07-28 14:50:21

Re: Connecting to a mobile router via USB

#4 2015-07-28 14:58:57

Re: Connecting to a mobile router via USB

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