Public bug reported:
I'm having problems with an external monitor on my laptop, so I wanted
to update the NVIDA drivers.
I first tried this in the "Additional Drivers" tab of "Software &
Updates". I selected a newer driver, clicked "Apply Changes", and
entered my password to install updates. This showed a progress bar and
seemed to be working, but after a few seconds I got a blank error
dialogue, with only an X button. I tried a few other driver versions
with the same result.
Next, I tried running `ubuntu-drivers autoinstall` from the command
line. I expected this would install some drivers. Instead, I got this
error trace:
```
$ sudo ubuntu-drivers autoinstall
Traceback (most recent call last):
File "/usr/bin/ubuntu-drivers", line 513, in <module>
greet()
File "/usr/lib/python3/dist-packages/click/core.py", line 1128, in __call__
return self.main(*args, **kwargs)
File "/usr/lib/python3/dist-packages/click/core.py", line 1053, in main
rv = self.invoke(ctx)
File "/usr/lib/python3/dist-packages/click/core.py", line 1659, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/lib/python3/dist-packages/click/core.py", line 1395, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/lib/python3/dist-packages/click/core.py", line 754, in invoke
return __callback(*args, **kwargs)
File "/usr/lib/python3/dist-packages/click/decorators.py", line 84, in
new_func
return ctx.invoke(f, obj, *args, **kwargs)
File "/usr/lib/python3/dist-packages/click/core.py", line 754, in invoke
return __callback(*args, **kwargs)
File "/usr/bin/ubuntu-drivers", line 432, in autoinstall
command_install(config)
File "/usr/bin/ubuntu-drivers", line 187, in command_install
UbuntuDrivers.detect.nvidia_desktop_pre_installation_hook(to_install)
File "/usr/lib/python3/dist-packages/UbuntuDrivers/detect.py", line 839, in
nvidia_desktop_pre_installation_hook
with_nvidia_kms = version >= 470
UnboundLocalError: local variable 'version' referenced before assignment
```
Looking at the code I believe the 'finally' block is trying to use the
'version' variable set in the `try`, which can only work if the try succeeds.
Seeing this, I modified the script to set a default value for 'version':
```
*** /home/edward/detect.py.original 2022-10-29 15:40:49.515765835 +1100
--- /home/edward/detect.py.fixed 2022-10-29 15:39:55.383555776 +1100
***************
*** 828,839 ****
--- 828,840 ----
'''Applies changes that need to happen before installing the NVIDIA
drivers'''
with_nvidia_kms = False
# Enable KMS if nvidia >= 470
for package_name in to_install:
if package_name.startswith('nvidia-driver-'):
+ version = -1
try:
version = int(package_name.split('-')[-1])
except ValueError:
pass
finally:
with_nvidia_kms = version >= 470
```
With this change `ubuntu-drivers autoinstall` ran successfully and
installed a bunch of packages. I can now see in Software & Updates that
I am updated to the latest NVIDIA driver versions. (However my monitor
isn't working yet so there may be another underlying issue.)
------------
Version information:
$ lsb_release -rd
Description: Ubuntu 22.04.1 LTS
Release: 22.04
$ apt-cache policy ubuntu-drivers-common
ubuntu-drivers-common:
Installed: 1:0.9.6.1
Candidate: 1:0.9.6.1
Version table:
*** 1:0.9.6.1 500
500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubuntu-drivers-common 1:0.9.6.1 [modified:
usr/lib/python3/dist-packages/UbuntuDrivers/detect.py]
ProcVersionSignature: Ubuntu 5.15.0-52.58-generic 5.15.60
Uname: Linux 5.15.0-52-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat Oct 29 15:31:57 2022
InstallationDate: Installed on 2021-04-01 (575 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64
(20210209.1)
SourcePackage: ubuntu-drivers-common
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: ubuntu-drivers-common (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug jammy wayland-session
--
You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/1995158
Title:
"ubuntu-drivers autoinstall" fails with Python UnboundLocaError
Status in ubuntu-drivers-common package in Ubuntu:
New
Bug description:
I'm having problems with an external monitor on my laptop, so I wanted
to update the NVIDA drivers.
I first tried this in the "Additional Drivers" tab of "Software &
Updates". I selected a newer driver, clicked "Apply Changes", and
entered my password to install updates. This showed a progress bar and
seemed to be working, but after a few seconds I got a blank error
dialogue, with only an X button. I tried a few other driver versions
with the same result.
Next, I tried running `ubuntu-drivers autoinstall` from the command
line. I expected this would install some drivers. Instead, I got this
error trace:
```
$ sudo ubuntu-drivers autoinstall
Traceback (most recent call last):
File "/usr/bin/ubuntu-drivers", line 513, in <module>
greet()
File "/usr/lib/python3/dist-packages/click/core.py", line 1128, in __call__
return self.main(*args, **kwargs)
File "/usr/lib/python3/dist-packages/click/core.py", line 1053, in main
rv = self.invoke(ctx)
File "/usr/lib/python3/dist-packages/click/core.py", line 1659, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/lib/python3/dist-packages/click/core.py", line 1395, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/lib/python3/dist-packages/click/core.py", line 754, in invoke
return __callback(*args, **kwargs)
File "/usr/lib/python3/dist-packages/click/decorators.py", line 84, in
new_func
return ctx.invoke(f, obj, *args, **kwargs)
File "/usr/lib/python3/dist-packages/click/core.py", line 754, in invoke
return __callback(*args, **kwargs)
File "/usr/bin/ubuntu-drivers", line 432, in autoinstall
command_install(config)
File "/usr/bin/ubuntu-drivers", line 187, in command_install
UbuntuDrivers.detect.nvidia_desktop_pre_installation_hook(to_install)
File "/usr/lib/python3/dist-packages/UbuntuDrivers/detect.py", line 839, in
nvidia_desktop_pre_installation_hook
with_nvidia_kms = version >= 470
UnboundLocalError: local variable 'version' referenced before assignment
```
Looking at the code I believe the 'finally' block is trying to use the
'version' variable set in the `try`, which can only work if the try succeeds.
Seeing this, I modified the script to set a default value for 'version':
```
*** /home/edward/detect.py.original 2022-10-29 15:40:49.515765835 +1100
--- /home/edward/detect.py.fixed 2022-10-29 15:39:55.383555776 +1100
***************
*** 828,839 ****
--- 828,840 ----
'''Applies changes that need to happen before installing the NVIDIA
drivers'''
with_nvidia_kms = False
# Enable KMS if nvidia >= 470
for package_name in to_install:
if package_name.startswith('nvidia-driver-'):
+ version = -1
try:
version = int(package_name.split('-')[-1])
except ValueError:
pass
finally:
with_nvidia_kms = version >= 470
```
With this change `ubuntu-drivers autoinstall` ran successfully and
installed a bunch of packages. I can now see in Software & Updates
that I am updated to the latest NVIDIA driver versions. (However my
monitor isn't working yet so there may be another underlying issue.)
------------
Version information:
$ lsb_release -rd
Description: Ubuntu 22.04.1 LTS
Release: 22.04
$ apt-cache policy ubuntu-drivers-common
ubuntu-drivers-common:
Installed: 1:0.9.6.1
Candidate: 1:0.9.6.1
Version table:
*** 1:0.9.6.1 500
500 http://archive.ubuntu.com/ubuntu jammy/main amd64 Packages
100 /var/lib/dpkg/status
ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: ubuntu-drivers-common 1:0.9.6.1 [modified:
usr/lib/python3/dist-packages/UbuntuDrivers/detect.py]
ProcVersionSignature: Ubuntu 5.15.0-52.58-generic 5.15.60
Uname: Linux 5.15.0-52-generic x86_64
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Sat Oct 29 15:31:57 2022
InstallationDate: Installed on 2021-04-01 (575 days ago)
InstallationMedia: Ubuntu 20.04.2.0 LTS "Focal Fossa" - Release amd64
(20210209.1)
SourcePackage: ubuntu-drivers-common
UpgradeStatus: No upgrade log present (probably fresh install)
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https://bugs.launchpad.net/ubuntu/+source/ubuntu-drivers-common/+bug/1995158/+subscriptions
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