"UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte" when removing nvidia-current package

Bug #1320868 reported by Dwi Prianto on 2014-05-19
This bug affects 6 people
Affects Status Importance Assigned to Milestone
ubuntu-drivers-common (Ubuntu)
Alberto Milone

Bug Description

$sudo apt-get remove nvidia-current
Reading package lists... Done
Building dependency tree
Reading state information... Done
Package 'nvidia-current' is not installed, so not removed
The following package was automatically installed and is no longer required:
Use 'apt-get autoremove' to remove it.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up nvidia-331 (331.38-0ubuntu7) ...
INFO:Enable nvidia-331
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/lenovo_thinkpad
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/dell_latitude
DEBUG:Parsing /usr/share/ubuntu-drivers-common/quirks/put_your_quirks_here
Traceback (most recent call last):
  File "/usr/bin/quirks-handler", line 65, in <module>
    operation_status = main(options)
  File "/usr/bin/quirks-handler", line 44, in main
    quirks = Quirks.quirkapplier.QuirkChecker(options.package_enable, path=quirks_path)
  File "/usr/lib/python3/dist-packages/Quirks/quirkapplier.py", line 38, in __init__
    self._system_info = self.get_system_info()
  File "/usr/lib/python3/dist-packages/Quirks/quirkapplier.py", line 64, in get_system_info
    return quirk_info.get_dmi_info()
  File "/usr/lib/python3/dist-packages/Quirks/quirkinfo.py", line 46, in get_dmi_info
    'class', 'dmi', 'id', item)).read().strip()
  File "/usr/lib/python3.4/codecs.py", line 313, in decode
    (result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0: invalid start byte
dpkg: error processing package nvidia-331 (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
E: Sub-process /usr/bin/dpkg returned an error code (1)

Dwi Prianto (dwi-prianto94) wrote :
Launchpad Janitor (janitor) wrote :

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in ubuntu-drivers-common (Ubuntu):
status: New → Confirmed
saad alhokail (saad-alhokail) wrote :

same thing happen to me even when i try to downgrade to version 304,also i try to install ".run" driver from nvidia website.
to fix my system (12.04 TLS) i have to login as a root in console mode and remove all nvidia files:
apt-get purge nvidia*
then i have reboot my pc and everything was returned to normal especially the screen resolution.
note: i have attached the jockey.log file.

summary: - E: Sub-process /usr/bin/dpkg returned an error code (1)
+ "UnicodeDecodeError: 'utf-8' codec can't decode byte 0xff in position 0:
+ invalid start byte" when removing nvidia-current package
Manolis Kapernaros (kapcom01) wrote :

Purge doesn't work for me.

wzhy90 (wzhy90) wrote :

In the file: /usr/lib/python3/dist-packages/Quirks/quirkinfo.py
Look at line no.45 in for item in self._quirk_info.keys():

value = open(os.path.join(self.sys_dir,
                    'class', 'dmi', 'id', item)).read().strip()

add mode='rb' to open() like this:

value = open(os.path.join(self.sys_dir,
                    'class', 'dmi', 'id', item), mode='rb').read().strip()

Ying-Chun Liu (paulliu) wrote :

I think this bug is being fixed in the upstream already.

We can close this bug with ubuntu-drivers-common (>= 1:0.4.19).

Changed in ubuntu-drivers-common (Ubuntu Xenial):
status: New → Triaged
Changed in ubuntu-drivers-common (Ubuntu):
status: Confirmed → Fix Committed

Thanks for uploading the fix for this bug report to -proposed. However, when reviewing the package in -proposed and the details of this bug report I noticed that the bug description is missing information required for the SRU process. You can find full details at http://wiki.ubuntu.com/StableReleaseUpdates#Procedure but essentially this bug is missing some of the following: a statement of impact, a test case and details regarding the regression potential. Thanks in advance!

Changed in ubuntu-drivers-common (Ubuntu Xenial):
assignee: nobody → Alberto Milone (albertomilone)
Martin Pitt (pitti) wrote :

Hang on, this has been stuck in yakkety-proposed due to being FTBFS for six weeks(!) now. I'm rejecting the upload to xenial-proposed now as this takes too much time away from the SRU team by re-visiting the same SRU over and over.

Changed in ubuntu-drivers-common (Ubuntu):
status: Fix Committed → Fix Released
status: Fix Released → Fix Committed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package ubuntu-drivers-common - 1:0.4.20

ubuntu-drivers-common (1:0.4.20) yakkety; urgency=medium

  * Remove PackageKit plugin. This stopped working with packagekit 1.0 as its
    apt backend is gone and aptcc does not support plugins.
  * debian/control: Drop obsolete XS-Testsuite:.
  * Bump Standards-Version to 3.9.8.

 -- Martin Pitt <email address hidden> Tue, 16 Aug 2016 11:46:36 +0200

Changed in ubuntu-drivers-common (Ubuntu):
status: Fix Committed → Fix Released

Hello Dwi, or anyone else affected,

Accepted ubuntu-drivers-common into xenial-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/ubuntu-drivers-common/1: in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug, mentioning the version of the package you tested, and change the tag from verification-needed to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Changed in ubuntu-drivers-common (Ubuntu Xenial):
status: Triaged → Fix Committed
tags: added: verification-needed
Changed in ubuntu-drivers-common (Ubuntu):
importance: Undecided → Medium
Changed in ubuntu-drivers-common (Ubuntu Xenial):
importance: Undecided → Medium

I do not experience the bug with package version 1:

tags: added: verification-done
removed: verification-needed

Sorry after reading SRU wiki I found out I am not supposed to do that.

tags: added: verification-needed
removed: verification-done

...but the launchpad comment tells me to mark it.

tags: added: verification-done
removed: verification-needed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package ubuntu-drivers-common - 1:

ubuntu-drivers-common (1: xenial-proposed; urgency=medium

  [ Alberto Milone ]
  * gpu-manager.c:
    - Fix memory leak in get_alternatives(). Make sure to always free
      alternatives->current_core and alternatives->current_egl.
    - Partially drop the drm code, and get information about connectors
      from sysf. This fixes a long standing performance issue (LP: #1586933).
    - Disable persistence mode before powering down the dGPU.
      If persistence mode is not disabled, gpu-manager will not be able to
      unload the nvidia module (LP: #1619306).
    - Make sure to load and unload nvidia-drm. This fixes a problem that
      prevents the dGPU from being powered off in hybrid systems with
      recent nvidia drivers (LP: #1619306).

  [ Ying-Chun Liu (PaulLiu) ]
  * Quirks/quirkinfo.py:
    - Catch and ignore UnicodeDecodeErrors in dmi info, as some machines
      may report board_name as ffffffffffff0a to mean empty, and this
      causes an error in python 3 (LP: #1320868).

 -- Alberto Milone <email address hidden> Mon, 06 Jun 2016 12:49:19 +0200

Changed in ubuntu-drivers-common (Ubuntu Xenial):
status: Fix Committed → Fix Released

The verification of the Stable Release Update for ubuntu-drivers-common has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.

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