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Old 03-02-2018, 12:46 PM   #1
Bill Schultz
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Registered: Mar 2018
Location: Germany
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USB not detected?


Hello,

My USB stick is not being detected. I don't know if it is partitioned or not, and do not know what kind of file system it has.

The USB is a Cruzer Edge 16GB.
With it connected, the output for various commands are as follows:

lsblk
Code:
NAME   MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda      8:0    0 298.1G  0 disk 
└─sda1   8:1    0 298.1G  0 part /
sr0     11:0    1  1024M  0 rom
lsusb
Code:
Bus 002 Device 003: ID 17ef:1003 Lenovo Integrated Smart Card Reader
Bus 002 Device 008: ID 0781:556b SanDisk Corp. Cruzer Edge
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 004: ID 0a5c:217f Broadcom Corp. BCM2045B (BDC-2.1)
Bus 001 Device 003: ID 147e:2016 Upek Biometric Touchchip/Touchstrip Fingerprint Sensor
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
fdisk -l
Code:
Disk /dev/sda: 298.1 GiB, 320072933376 bytes, 625142448 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xb707527d

Device     Boot Start       End   Sectors   Size Id Type
/dev/sda1  *     2048 625141759 625139712 298.1G 83 Linux
Does anybody know how I can resolve this problem without using any GTK+ utilities such as GNOME Disks, as I currently have an issue with the "canberra-gtk-module" [https://www.linuxquestions.org/quest...le-4175624805/].

Thanks in advance!
Bill
 
Old 03-02-2018, 12:52 PM   #2
Emerson
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Start from beginning, is USB storage kernel module loaded?
 
Old 03-02-2018, 01:04 PM   #3
Bill Schultz
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Thanks for the reply Emerson,

lsmod
Code:
Module                  Size  Used by
nls_iso8859_1          16384  0
nls_cp437              20480  0
vfat                   20480  0
fat                    77824  1 vfat
ccm                    20480  3
fuse                  118784  3
snd_hda_codec_hdmi     57344  1
snd_hda_codec_conexant    24576  1
btusb                  53248  0
intel_powerclamp       16384  0
coretemp               16384  0
btrtl                  16384  1 btusb
kvm_intel             229376  0
snd_hda_codec_generic    86016  1 snd_hda_codec_conexant
kvm                   704512  1 kvm_intel
btbcm                  16384  1 btusb
mei_wdt                16384  0
joydev                 24576  0
btintel                16384  1 btusb
bluetooth             634880  5 btrtl,btintel,btbcm,btusb
wmi_bmof               16384  0
mousedev               24576  0
irqbypass              16384  1 kvm
snd_hda_intel          45056  0
snd_hda_codec         151552  4 snd_hda_intel,snd_hda_codec_conexant,snd_hda_codec_hdmi,snd_hda_codec_generic
snd_hda_core           94208  5 snd_hda_intel,snd_hda_codec_conexant,snd_hda_codec,snd_hda_codec_hdmi,snd_hda_codec_generic
snd_hwdep              20480  1 snd_hda_codec
ecdh_generic           24576  1 bluetooth
crct10dif_pclmul       16384  0
arc4                   16384  2
crc32_pclmul           16384  0
snd_pcm               135168  4 snd_hda_intel,snd_hda_codec,snd_hda_core,snd_hda_codec_hdmi
ghash_clmulni_intel    16384  0
snd_timer              36864  1 snd_pcm
iwldvm                270336  0
mac80211              909312  1 iwldvm
pcbc                   16384  0
mxm_wmi                16384  0
iwlwifi               315392  1 iwldvm
cfg80211              741376  3 iwlwifi,mac80211,iwldvm
iTCO_wdt               16384  0
iTCO_vendor_support    16384  1 iTCO_wdt
aesni_intel           188416  2
psmouse               167936  0
aes_x86_64             20480  1 aesni_intel
crypto_simd            16384  1 aesni_intel
glue_helper            16384  1 aesni_intel
pcspkr                 16384  0
mei_me                 45056  1
i915                 1921024  18
cryptd                 28672  3 crypto_simd,ghash_clmulni_intel,aesni_intel
thinkpad_acpi          98304  1
intel_cstate           16384  0
intel_uncore          131072  0
nvram                  16384  1 thinkpad_acpi
input_leds             16384  0
rfkill                 28672  5 bluetooth,thinkpad_acpi,cfg80211
mei                   106496  3 mei_me,mei_wdt
ac                     16384  0
snd                    98304  9 snd_hda_intel,snd_hwdep,snd_hda_codec_conexant,snd_hda_codec,snd_timer,thinkpad_acpi,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_pcm
soundcore              16384  1 snd
intel_ips              24576  0
drm_kms_helper        200704  1 i915
i2c_i801               32768  0
drm                   466944  8 i915,drm_kms_helper
e1000e                282624  0
syscopyarea            16384  1 drm_kms_helper
sysfillrect            16384  1 drm_kms_helper
sysimgblt              16384  1 drm_kms_helper
fb_sys_fops            16384  1 drm_kms_helper
i2c_algo_bit           16384  1 i915
ptp                    20480  1 e1000e
wmi                    28672  2 wmi_bmof,mxm_wmi
shpchp                 40960  0
tpm_tis                16384  0
tpm_tis_core           20480  1 tpm_tis
evdev                  20480  13
tpm                    65536  2 tpm_tis,tpm_tis_core
battery                20480  0
pps_core               20480  1 ptp
lpc_ich                28672  0
mac_hid                16384  0
intel_agp              24576  0
intel_gtt              24576  2 intel_agp,i915
agpgart                49152  3 intel_agp,intel_gtt,drm
rtc_cmos               24576  1
acpi_cpufreq           24576  1
sg                     40960  0
ip_tables              28672  0
x_tables               45056  1 ip_tables
ext4                  712704  1
crc16                  16384  2 bluetooth,ext4
mbcache                16384  1 ext4
jbd2                  122880  1 ext4
fscrypto               32768  1 ext4
sr_mod                 28672  0
cdrom                  69632  1 sr_mod
sd_mod                 61440  2
mmc_block              40960  0
serio_raw              16384  0
atkbd                  32768  0
libps2                 16384  2 atkbd,psmouse
ahci                   40960  1
libahci                40960  1 ahci
libata                278528  2 ahci,libahci
sdhci_pci              32768  0
crc32c_intel           24576  0
sdhci                  53248  1 sdhci_pci
ehci_pci               16384  0
led_class              16384  4 sdhci,input_leds,thinkpad_acpi,iwldvm
ehci_hcd               94208  1 ehci_pci
scsi_mod              258048  4 sd_mod,libata,sr_mod,sg
mmc_core              172032  3 sdhci,sdhci_pci,mmc_block
usbcore               286720  3 ehci_hcd,btusb,ehci_pci
usb_common             16384  1 usbcore
i8042                  32768  0
serio                  28672  7 serio_raw,atkbd,psmouse,i8042
I am not too sure what you mean by "USB storage kernal module" (hence why I am posting in Newbie section), but these are the modules.

From the lsusb command, the USB is detected, however, in Xfce File Manager, it does not appear. Nor does it appear under the lsblk command.

Thanks for the help!
 
Old 03-02-2018, 01:53 PM   #4
Emerson
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The kernel module to access USB block devices is called usb_storage, I do not see it loaded. I'd try and load it by hand and check if fdisk shows your drive afterwards.
 
Old 03-02-2018, 02:07 PM   #5
Bill Schultz
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Thanks for the reply Emerson,

How do I do this from the terminal?
I've been through Arch Linux boot camp (i.e. the installation), however I don't know too many other unrelated commands.

Cheers!
 
Old 03-02-2018, 02:31 PM   #6
Bill Schultz
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modprobe usb_storage
Code:
modprobe: FATAL: Module usb_storage not found in directory /lib/modules/4.15.3-2-ARCH
 
Old 03-02-2018, 02:49 PM   #7
michaelk
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Have you looked at the output of the dmesg command to see if the drive is being recognized?

Assuming you are running a stock kernel SCSI-Support, SCSI-Disk-Support and usb_storage are compiled in so it isn't a loadable module.
 
Old 03-02-2018, 04:00 PM   #8
Emerson
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Thanks, michaelk. The only non-Gentoo Linux I have here is Mint and it has usb_storage as module.
 
Old 03-03-2018, 10:57 AM   #9
DavidMcCann
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I don't have that module in CentOS.

Firstly, have you tried using more than one USB port? Can you try the stick on another computer?

The fact that it's not being mounted doesn't necessarily mean it's not being found. Plug it in, start gparted, and see if that program can find /dev/sdb.
 
Old 03-03-2018, 08:47 PM   #10
AwesomeMachine
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It does appear something is amiss. Try ls /dev/sd*. As also mentioned, try different usb ports. Try different computers. Seriously, if it won't show up in /dev, that's a bad sign. If you're using a laptop, make sure it's plugged into the AC outlet. Most laptops supply less power to the USB ports when running on battery power. The Sandisk Cruz might require more power than that.
 
  


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