I doubt I'm going to be able to `apport-collect 1891790` as I tried for
>3 hours on the r50p, and the t42p is now having the same issue (it's
just slower to be impacted; maybe because it has more RAM)
Checks for squashfs errors are clean (ie. `dmesg|grep squash`) with only
program title appearing once, no errors
Both boxes crash though, at first slow to respond till the eventually
pause. If I try `ubuntu-bug linux` (last done on t42p) I get a crash
file in /var/crash, but it's hard to read, and it won't file using
`ubuntu-bug`.
The closest I got was authorization is required, but firefox never gets
to show anything allowing me to authorize it. The laptops appear to get
slower & slower they run, and trying to read anything useful on the
screen isn't really possible.
I even tried `sudo apt install openssh-server` hoping I could read more
from a different box, but that seems to speed up the slowing nature of
whatever this box doesn't like in the 5.4 kernel/stack. This will
likely be a different issue, but why I filed on the kernel, not xserver-
xorg
(apport-collect has now run >30 mins on t42p and I've not been able to
authorize it, can't move mouse anymore, but I'm giving up... SysRq
caused reboot, so kernel is still running, even if I could not use
ctrl+alt+f4 to switch to text terminal; fyi: text terminals are easily
read)
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1891790
Title:
lubuntu 18.04.5 text unreadable on old thinkpads (radeon, HWE 5.4
kernel only)
Status in linux package in Ubuntu:
Confirmed
Bug description:
** Summary
Screen is unreadable much of the time with black badly-tuned-digital-tv type
fragments covering image. As you action things (use a menu, click on a
different window etc) the black fragments move (though often only parts of
screen; not all of screen)
** Background
This was looked into because of a number of support requests and I
detected a pattern. All users are using the HWE kernel, and issue
didn't occur using 18.04.4, though I personally only tested the live
daily (during the development cycle).
- thinkpad x31
https://discourse.lubuntu.me/t/reviving-thinkpad-x31-problems-with-messed-up-screen/1457/
- thinkpad t42
https://ubuntuforums.org/showthread.php?t=2448800&p=13979514#post13979514
- thinkpad t41
https://askubuntu.com/questions/1266918/latest-updates-to-lubuntu-18-04-4-lts-32-bit-create-almost-impossible-graphics-i
(and I believe others before I recognized the pattern & started
noting; I ignored initially as I had no issues with t43, not having
used the t42p or r50p in QA testing for awhile - a scan of my QA-
testing live will show when I tested with each box in first line of
comments). I've also seen this on very different boxes to old
thinkpads too.
My boxes impacted
- ibm thinkpad t42p (pentium m, 2gb ram, amd/ati mobility firegl t2;
rv350/m10 gl)
- ibm thinkpad r50p (pentium m, 1gb ram, amd/ati mobility firegl t2;
rv350/m10 gl)
** 20.04/HWE kernel only
If I live QA-test using the 18.04.4 ISO or released image, no issues
occur (using 5.3 kernel & it's packages). Likewise I have no issues
using the GA (4.15) kernel in testing (the r50p was used more
regularly in testing in prior bionic cycles, alas not much in 18.04.5
development/recently; expecting same results with thinkpad t43 which
does not have this issue)
This report should possibly be filed on xserver-xorg. I've only
experienced it with old radeon thinkpads (but screen on box makes it
difficult to explore)
(Filed online as I've been struggling to file this on actual box)
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