21.10 → 22.04: Installs *brltty* breaking FTDI USB serial devices

[Paul Menzel]

On a default Ubuntu desktop installation (with GNOME) doing `do-release-upgrade` from 21.10 to 22.04 installed *brltty* breaking FTDI USB serial devices.

```
[ 2435.150025] usb 1-2: new full-speed USB device number 6 using xhci_hcd
[ 2435.305646] usb 1-2: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00
[ 2435.305660] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2435.305666] usb 1-2: Product: USB Serial Converter
[ 2435.305671] usb 1-2: Manufacturer: FTDI
[ 2435.305675] usb 1-2: SerialNumber: FTFCV4W7
[ 2435.311747] ftdi_sio 1-2:1.0: FTDI USB Serial Device converter detected
[ 2435.311824] usb 1-2: Detected FT232RL
[ 2435.313260] usb 1-2: FTDI USB Serial Device converter now attached to ttyUSB0

[ 2437.583625] usb 1-2: usbfs: interface 0 claimed by ftdi_sio while 'brltty' sets config #1
[ 2437.585095] ftdi_sio ttyUSB0: FTDI USB Serial Device converter now disconnected from ttyUSB0
[ 2437.585168] ftdi_sio 1-2:1.0: device disconnected
```

The brltty problem is tracked in the Debian BTS as #667616 [1], and the solution is to remove the package with `sudo apt purge brltty`.

The question is though, why `do-release-upgrade` installed it in the first place. I do not remember the problem from earlier release upgrades.

[1]: https://bugs.debian.org/667616
---
ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: unknown
CrashDB: ubuntu
CrashReports:
 644:0:116:0:2022-05-31 15:11:54.155275593 +0200:2022-05-31 15:11:53.683275612 +0200:/var/crash/kdump_lock
 644:0:116:325:2022-05-31 15:11:57.819275442 +0200:2019-08-23 14:33:45.567141279 +0200:/var/crash/kexec_cmd
CurrentDesktop: GNOME
DistroRelease: Ubuntu 22.04
InstallationDate: Installed on 2017-03-20 (1898 days ago)
InstallationMedia: Ubuntu 16.04.2 LTS "Xenial Xerus" - Release amd64 (20170215.2)
Package: ubuntu-release-upgrader (not installed)
ProcVersionSignature: Ubuntu 5.15.0-33.34-generic 5.15.30
Tags: wayland-session jammy dist-upgrade
Uname: Linux 5.15.0-33-generic x86_64
UpgradeStatus: Upgraded to jammy on 2022-05-06 (26 days ago)
UserGroups: adm lpadmin sambashare sudo
VarLogDistupgradeXorgFixuplog:
 INFO:root:/usr/bin/do-release-upgrade running
 INFO:root:No xorg.conf, exiting
_MarkForUpload: True

[Sebastien Bacher (seb128)]

Jeremy, that's not a duplicate. The other bug is about brltty claiming the device, the report here is about the package being installed on upgrade which doesn't sound like it should

[Nick Rosbrook (enr0n)]

Hi Paul,

Please run `apport-collect 1976293` from a terminal on the affected system. This will attach the relevant log files from your system to this bug report.

[Brian Murray (brian-murray)]

ubuntu-desktop-minimal recommends brltty but it also did that for Ubuntu 21.10 so the upgrade logs might be helpful in determining if the package was previously installed or not.

[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

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[Paul Menzel (paulmenzel)]

My bad, actually looking on the device, *brltty* was installed for a long time. :-(

    /var/log/dpkg.log.12.gz:2020-06-24 18:24:40 upgrade brltty:amd64 5.6-11ubuntu2 6.0+dfsg-4ubuntu6

Sorry about the confusion. It looks like the user tested this exact USB serial converter (0403:6001) the first time.

```
Mai 30 12:14:14 Ixpees kernel: Linux version 5.15.0-33-generic (buildd@lcy02-amd64-037) (gcc (Ubuntu 11.2.0-19ubuntu1) 11.2.0, GNU ld (GNU Binutils for Ubuntu) 2.38) #34-Ubuntu SMP Wed May 18 13:34:26 UTC 2022 (Ubuntu 5.15.0-33.34-generic 5.15.30)
[…]
Mai 30 12:16:13 Ixpees kernel: usb 3-1.1: new full-speed USB device number 4 using xhci_hcd
Mai 30 12:16:13 Ixpees kernel: usb 3-1.1: New USB device found, idVendor=0403, idProduct=6001, bcdDevice= 6.00
Mai 30 12:16:13 Ixpees kernel: usb 3-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Mai 30 12:16:13 Ixpees kernel: usb 3-1.1: Product: USB Serial Converter
Mai 30 12:16:13 Ixpees kernel: usb 3-1.1: Manufacturer: FTDI
Mai 30 12:16:13 Ixpees kernel: usb 3-1.1: SerialNumber: FTFCV4W7
Mai 30 12:16:13 Ixpees mtp-probe[3062]: checking bus 3, device 4: "/sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/0000:02:02.0/0000:39:00.0/usb3/3-1/3-1.1"
Mai 30 12:16:13 Ixpees mtp-probe[3062]: bus: 3, device: 4 was not an MTP device
Mai 30 12:16:13 Ixpees snapd[1117]: udevmon.go:149: udev event error: Unable to parse uevent, err: cannot parse libudev event: invalid env data
Mai 30 12:16:13 Ixpees snapd[1117]: udevmon.go:149: udev event error: Unable to parse uevent, err: cannot parse libudev event: invalid env data
Mai 30 12:16:13 Ixpees systemd[1]: Starting Braille Device Support...
Mai 30 12:16:13 Ixpees kernel: calling usb_serial_init+0x0/0x1000 [usbserial] @ 3008
Mai 30 12:16:13 Ixpees kernel: usbcore: registered new interface driver usbserial_generic
Mai 30 12:16:13 Ixpees kernel: usbserial: USB Serial support registered for generic
Mai 30 12:16:13 Ixpees kernel: initcall usb_serial_init+0x0/0x1000 [usbserial] returned 0 after 105 usecs
Mai 30 12:16:13 Ixpees kernel: calling usb_serial_module_init+0x0/0x1000 [ftdi_sio] @ 3008
Mai 30 12:16:13 Ixpees kernel: usbcore: registered new interface driver ftdi_sio
Mai 30 12:16:13 Ixpees kernel: usbserial: USB Serial support registered for FTDI USB Serial Device
Mai 30 12:16:13 Ixpees kernel: ftdi_sio 3-1.1:1.0: FTDI USB Serial Device converter detected
Mai 30 12:16:13 Ixpees kernel: usb 3-1.1: Detected FT232RL
Mai 30 12:16:13 Ixpees kernel: usb 3-1.1: FTDI USB Serial Device converter now attached to ttyUSB0
Mai 30 12:16:13 Ixpees kernel: initcall usb_serial_module_init+0x0/0x1000 [ftdi_sio] returned 0 after 2817 usecs
Mai 30 12:16:13 Ixpees mtp-probe[3069]: checking bus 3, device 4: "/sys/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/0000:02:02.0/0000:39:00.0/usb3/3-1/3-1.1"
Mai 30 12:16:13 Ixpees mtp-probe[3069]: bus: 3, device: 4 was not an MTP device
Mai 30 12:16:13 Ixpees snapd[1117]: udevmon.go:149: udev event error: Unable to parse uevent, err: cannot parse libudev event: invalid env data
Mai 30 12:16:13 Ixpees brltty[3064]: BRLTTY 6.4 rev BRLTTY-6.4 [https://brltty.app/]
Mai 30 12:16:13 Ixpees brltty[3064]: BRLTTY 6.4 rev BRLTTY-6.4 [https://...