Hi Andreas,
So #2145092 seems to be similar to this one (if not the same). I think
using either one is fine for me. Depends on what you prefer.
For testing on platforms with parport, my plan would be using QEMU with
options like:
```
-chardev file,id=lpt0,path=./parport-output.bin \
-device isa-parallel,chardev=lpt0,index=0 \
```
I'll update bug description to include this. Let me know if you have any
concern.
** Description changed:
[ Impact ]
During our testing on Linux desktop platforms with Resolute, we found
that there’s a low chance (2/200) that loading the parport_pc module on
a platform without parports leads to ACPI stress test failure. Similar
issues have been reported in different places[1][2]
The module loads unconditionally due to module.conf in cups-filters.
This is unecessary because modaliases and related mechanism (udev etc.)
already handle this.
[ Fix ]
Do not include parport_pc module in cups-filters' debian/local/modules-
load.conf. See the following merge proposal from Debian:
- Disable parport_pc automatic load (Closes: #1139318):
https://salsa.debian.org/printing-team/cups-filters/-/merge_requests/3
[ Test ]
- 1. Install the package on a platform without parport
+ On platform without parports:
+ 1. Install the package
2. Update initramfs. Make sure there's no staled config from the older
version.
3. Boot into the system. Make sure parport_pc doesn't load
+
+ On platform with parport (e.g. with QEMU):
+ 1. Install the package
+ 2. Update initramfs. Make sure there's no staled config from the older
version.
+ 3. Boot into the system, and make sure parport_pc loads
[ Where problems could occur ]
If a user doesn't update the initramfs after updating this package, the
initramfs may contain old config file, and may still load the module.
[ Other Information]
+ There's option for QEMU to emulate parport, by something similar to:
+
+ -chardev file,id=lpt0,path=./parport-output.bin \
+ -device isa-parallel,chardev=lpt0,index=0
+
[1] https://bugs.launchpad.net/ubuntu/+source/cups-filters/+bug/2145092
[2]
https://lore.kernel.org/lkml/CADVatmM_mRnkDX=hpujbykkzngynxjfrsujgxm2lawwmel_...@mail.gmail.com/#t
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2156340
Title:
Do not handle parport_pc load in modules-load.conf
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/cups-filters/+bug/2156340/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
