KRDC needs Qt 5.15.7 to fix KRDC bugs

[[e-mail]]

KRDC has all sorts of weird issues with blank/blue screens after connecting to a computer or going full-screen, etc. see

https://bugs.launchpad.net/ubuntu/+source/krdc/+bug/1993788
https://bugs.kde.org/show_bug.cgi?id=460089

Issue did not occur on Ubuntu 22.04, only started happening on 22.10. Others reported they could not reproduce on Arch which uses Qt 5.15.7, but could reproduce on Ubuntu 22.10. I compiled Qt 5.15.7 and verified this fixes KRDC (see second URL above); so creating this ticket to hopefully help push along Qt 5.15.7 into Ubuntu main repositories.

ProblemType: Bug
DistroRelease: Ubuntu 22.10
Package: krdc 4:22.08.1-0ubuntu1
ProcVersionSignature: Ubuntu 5.19.0-23.24-generic 5.19.7
Uname: Linux 5.19.0-23-generic x86_64
ApportVersion: 2.23.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Tue Nov 22 13:35:42 2022
InstallationDate: Installed on 2012-07-08 (3789 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120606.2)
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/usr/bin/fish
SourcePackage: krdc
UpgradeStatus: Upgraded to kinetic on 2022-10-29 (24 days ago)
modified.conffile..etc.default.apport:
 # set this to 0 to disable apport, or to 1 to enable it
 # you can temporarily override this with
 # sudo service apport start force_start=1
 enabled=0
mtime.conffile..etc.default.apport: 2016-05-18T13:08:28.463417

[Rik Mills (rikmills)]

On 22/11/2022 18:41, <email address hidden> wrote:
> so creating this ticket to
> hopefully help push along Qt 5.15.7 into Ubuntu main repositories.

5.15.7 as a whole cannot be pushed to stable releases as an update. The
break in private ABI that even a Qt point release involves prevents
that. The way ahead there would be to track down the upstream patch/fix
that happened in 5.15.7 and apply that as a patch to the current Qt.

5.15.7 will very likely land in Lunar Lobster dev release at some point
this dev cycle. Some work has started in Ubuntu/Debian, but it may be
slower than normal as the main maintainer is not available to work much
on it at the moment.

[[e-mail] (mike-papersolve)]

Crap, I am able to run KRDC and Konsole (really the only KDE or Qt apps I use) on 5.15.7 without any rebuilding, but I guess like you said there are other things that are known to break from a point release without a full rebuild. I believe only commercial license holders (which I am not) get access to changelogs and source control (so no opportunity for a git bisect). And no way I'm diff'ing the humongous source code tarball between .6 and .7. I'll just wait for Lunar I guess and continue to run KRDC with LD_LIBRARY_PATH change.