Public bug reported:
This seems to be regression in kernel 2.6.27-13. The issue also exists
in 2.6.27-14. (both from intrepid-proposed)
The issue does not exist in kernels 2.6.27-7 and 2.6.27-11 (from
intrepid-updates or security), when booting these old kernels in my
otherwise unchanged system.
(I have not yet had time to test other kernels. I guess -12 might be
interesting to find out where the problem has been really introduced and
-18 might be interesting whether the issue has been solved in the
meantime. Please advise, which kernel should be tested, if any)
When using a tty (Ctrl-Alt-F1 ... Ctrl-Alt-F6) the character "Latin small
letter o with diaresis" unicode U+00F6 or UTF-8 0xc3b6 is displayed as random
pixels.
The pixel pattern seems to be different after each boot and it's always
different on each tty (tty1 ... tty6). However it does not seem to change on
the same tty as long as the machine is not rebooted.
I use a Finnish keyboard (see attached console-setup file) and it also
supports the non-ASCII characters
- "Latin small letter a with diaresis" Unicode U+00E4 equals UTF-8
0xc3a4 and
- "Latin small letter a with ring above" Unicode U+00E5 equals UTF-8
0xc3a5
The latter 2 characters (as well as the ASCII characters) do appear
always correctly.
Without a Finnish keyboard the problem can be repeated by "cat
sample.txt" (attached) (if your terminal is in utf8 mode)
ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
NonfreeKernelModules: ath_hal
Package: linux-image-2.6.27-14-generic 2.6.27-14.30
ProcCmdLine: root=UUID=f6bf9b65-0cad-45bd-b3a0-a7353a3900af ro quiet splash
ProcEnviron:
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
LANG=fi_FI.UTF-8
SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.27-14.30-generic
SourcePackage: linux
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug
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random pixels displayed for a certain character on tty
https://bugs.launchpad.net/bugs/351207
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