Arch Linux

mhelvens

Member

From: Leiden, the Netherlands

Registered: 2013-12-04

Posts: 69

Website

[SOLVED] E-reader recognized as USB device, but not as storage device

Hi all,

I have a Pocketbook Pro 912 e-reader. Under my old Gentoo installation, it worked out of the box. On my new Arch installation, it doesn't:

dmesg

[279084.968939] usb 1-1: new high-speed USB device number 13 using xhci_hcd
[279103.171946] usb 1-1: new high-speed USB device number 14 using xhci_hcd

lsusb

Bus 001 Device 012: ID 0525:a4a5 Netchip Technology, Inc. Pocketbook Pro 903

lsblk:

    Device is not listed

This hasn't happened to me before, so I'm not sure what to try next. My Google fu fails me. The old Gentoo box is no longer available, so I can't check anything there.

Thanks in advance for your help!

Last edited by mhelvens (2014-07-29 19:55:58)

tomk

Forum Fellow

From: Ireland

Registered: 2004-07-21

Posts: 9,839

Re: [SOLVED] E-reader recognized as USB device, but not as storage device

Does anything change if you 'modprobe usb-storage'?

mhelvens

Member

From: Leiden, the Netherlands

Registered: 2013-12-04

Posts: 69

Website

Re: [SOLVED] E-reader recognized as USB device, but not as storage device

That module doesn't seem to exist:

modinfo usb-storage

modinfo: ERROR: Module alias usb-storage not found.

lsmod | grep usb

root@mhelvens-pc / # lsmod | grep usb
usbhid                 41250  0 
snd_usb_audio         131860  1 
snd_usbmidi_lib        21428  1 snd_usb_audio
snd_rawmidi            20278  1 snd_usbmidi_lib
snd_hwdep               6652  2 snd_usb_audio,snd_hda_codec
snd_pcm                83207  6 snd_usb_audio,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_controller
hid                    93052  3 i2c_hid,hid_generic,usbhid
snd                    61276  27 snd_hda_codec_realtek,snd_usb_audio,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_rawmidi,snd_hda_codec_generic,snd_usbmidi_lib,snd_hda_codec,snd_hda_intel,snd_seq_device
usbcore               188381  7 snd_usb_audio,uvcvideo,snd_usbmidi_lib,ehci_hcd,ehci_pci,usbhid,xhci_hcd
usb_common              1712  1 usbcore

I should point out that I followed the Arch installation guide, so my installation should be pretty much 'standard'.

Last edited by mhelvens (2014-07-29 16:09:49)

mhelvens

Member

From: Leiden, the Netherlands

Registered: 2013-12-04

Posts: 69

Website

Re: [SOLVED] E-reader recognized as USB device, but not as storage device

I restarted my PC, and now it seems to work again. I did do an update earlier (including the kernel), but I thought my system could pretty much continue running on the old kernel until I chose to reboot. Is that not the case?

Scimmia

Fellow

Registered: 2012-09-01

Posts: 13,729

Re: [SOLVED] E-reader recognized as USB device, but not as storage device

That's a serious problem. Could you try running depmod -a, then modprobe usb-storage again? What kernel are you on (pacman -Q linux and uname -r)?
Edit:

I restarted my PC, and now it seems to work again. I did do an update earlier (including the kernel), but I thought my system could pretty much continue running on the old kernel until I chose to reboot. Is that not the case?

No, that is not the case. It can continue to run with the modules it already has loaded, but it cannot load new modules since they have been removed from the filesystem.

Last edited by Scimmia (2014-07-29 16:35:09)

mhelvens

Member

From: Leiden, the Netherlands

Registered: 2013-12-04

Posts: 69

Website

Re: [SOLVED] E-reader recognized as USB device, but not as storage device

I did do an update earlier (including the kernel), but I thought my system could pretty much continue running on the old kernel until I chose to reboot. Is that not the case?

No, that is not the case. It can continue to run with the modules it already has loaded, but it cannot load new modules since they have been removed from the filesystem.

And the usb-storage module is not loaded in advance, but when a usb storage device is detected. That was the part of the puzzle I was missing. :-)

Thanks, all!