cp2105 usb serial gpio errors

[Dan Lipsitt]

The primary error appears to be this one:

```
cp210x 1-2:1.0: failed to get vendor val 0x3711 size 2: -71
cp210x 1-2:1.0: GPIO initialisation failed, continuing without GPIO support
```

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: linux-image-4.10.0-19-generic 4.10.0-19.21
ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
Uname: Linux 4.10.0-19-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
 Cannot stat file /proc/2350/fd/16: Stale file handle
 Cannot stat file /proc/2350/fd/17: Stale file handle
                      USER PID ACCESS COMMAND
 /dev/snd/controlC0: ubuntu 2257 F.... pulseaudio
CasperVersion: 1.380
Date: Tue Aug 15 02:26:05 2017
LiveMediaBuild: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash ---
RelatedPackageVersions:
 linux-restricted-modules-4.10.0-19-generic N/A
 linux-backports-modules-4.10.0-19-generic N/A
 linux-firmware 1.164
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/03/2017
dmi.bios.vendor: Intel Corp.
dmi.bios.version: BNKBL357.86A.0042.2017.0303.1854
dmi.board.name: NUC7i3BNB
dmi.board.vendor: Intel Corporation
dmi.board.version: J22859-303
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrBNKBL357.86A.0042.2017.0303.1854:bd03/03/2017:svn:pn:pvr:rvnIntelCorporation:rnNUC7i3BNB:rvrJ22859-303:cvn:ct3:cvr:

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.13 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13-rc4

[Dan Lipsitt (danlipsitt)]

Thanks for the response and sorry for the limited details.

I confirmed bug is present with http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.13-rc4/linux-image-4.13.0-041300rc4-generic_4.13.0-041300rc4.201708062231_amd64.deb

I don't know of a previous working version. My colleagues were compiling the vendor module for kernel 3.13 (from before it was mainlined) on 4.x and that was working. I don't know if it was working after being mainlined.

[Dan Lipsitt (danlipsitt)]

The builtin module in http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.19.8-vivid/linux-headers-3.19.8-031908-generic_3.19.8-031908.201505110938_amd64.deb is also broken.