[Bug 1946525] Re: Removable media are not mounted automatically

[Eric Buell]

Noob to Ubuntu... I have a similar problem with a U.S. Robotics USR5637
modem.  lsusb and usb-devices both show the device, and dmesg shows it
being recognized, however it does not show up in /dev as ttyACM*.
Running 21.10 on a Raspberry Pi 4.  The device works as expected with
20.04.3 LTS also on a Pi 4.  I tried Henrik Dahle's work around of
reinstalling fuse simply because he had luck with it, but no joy.  The
device is also not created with it installed during a reboot.

lsusb:
Bus 001 Device 008: ID 0baf:0303 U.S. Robotics USR5637 56K Faxmodem

usb-devices:
T:  Bus=01 Lev=04 Prnt=06 Port=01 Cnt=01 Dev#=  8 Spd=480 MxCh= 0
D:  Ver= 2.00 Cls=02(commc) Sub=00 Prot=00 MxPS=64 #Cfgs=  1
P:  Vendor=0baf ProdID=0303 Rev=02.00
S:  Manufacturer=U.S.Robotics
S:  Product=USB Modem
S:  SerialNumber=002
C:  #Ifs= 2 Cfg#= 2 Atr=80 MxPwr=360mA
I:  If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=02 Prot=01 Driver=(none)
I:  If#=0x1 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=(none)


dmesg:
[  127.376952] usb 1-1.2.4.1: new high-speed USB device number 7 using xhci_hcd
[  127.585699] usb 1-1.2.4.1: New USB device found, idVendor=0baf, 
idProduct=0303, bcdDevice= 2.00
[  127.585739] usb 1-1.2.4.1: New USB device strings: Mfr=1, Product=2, 
SerialNumber=10
[  127.585757] usb 1-1.2.4.1: Product: USB Modem
[  127.585771] usb 1-1.2.4.1: Manufacturer: U.S.Robotics
[  127.585784] usb 1-1.2.4.1: SerialNumber: 002
[  127.747138] kauditd_printk_skb: 518 callbacks suppressed
[  127.747159] audit: type=1400 audit(1646439492.316:597): apparmor="DENIED" 
operation="open" profile="snap.chromium.chromium" 
name="/sys/devices/platform/scb/fd50.pcie/pci:00/:00:00.0/:01:00.0/usb1/1-1/1-1.2/1-1.2.4/1-1.2.4.1/busnum"
 pid=2810 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 
ouid=0
[  127.747191] audit: type=1400 audit(1646439492.316:598): apparmor="DENIED" 
operation="open" profile="snap.chromium.chromium" 
name="/sys/devices/platform/scb/fd50.pcie/pci:00/:00:00.0/:01:00.0/usb1/1-1/1-1.2/1-1.2.4/1-1.2.4.1/devnum"
 pid=2810 comm="ThreadPoolForeg" requested_mask="r" denied_mask="r" fsuid=1000 
ouid=0

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Title:
  Removable media are not mounted automatically

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[Bug 908751] Re: Ubuntu 12.04, only "dummy output" device detected

[Eric Buell]

Noob/First post ... I have two audio devices in my ASUS P8Z77-V/CORE
I7/EGA GTX 670 system that weren't being recognized and the workaround
that now works every time is to select the "recovery mode" kernel from
the Grub menu (you need to comment out "GRUB_HIDDEN_TIMEOUT=0" in
/etc/default/grub and run update-grub if Ubuntu is the only OS in the
system in order to see this menu), then simply select Resume from the
Recovery Menu to continue with a "normal" boot (4 extra keystrokes
during the boot).  This also fixed a 1+ minute pause during bootup, and
a system hang that was occuring on shutdown/reboot (requiring a manual
reset).  IMHO this makes Ubuntu seem quite unfriendly to a new user and
is therefore an important bug to fix.  I want to see Ubuntu be very
successful.

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https://bugs.launchpad.net/bugs/908751

Title:
  Ubuntu 12.04, only "dummy output" device detected

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