Bug 1365062

Summary: ncurses-6.0-6.20160709 is unstable
Product: [Fedora] Fedora Reporter: Ralf Corsepius <rc040203>
Component: ncursesAssignee: Miroslav Lichvar <mlichvar>
Status: CLOSED EOL QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: unspecified    
Version: 24CC: mlichvar
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Last Closed: 2017-08-08 16:19:21 UTC Type: Bug
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Description Ralf Corsepius 2016-08-08 12:08:27 UTC
Description of problem:
Since ncurses in f24 was upgraded to ncurses-6.0-6.20160709, I am facing a various "corruption" problems in terminals (consoles, xfce4-terminal, etc.).

Version-Release number of selected component (if applicable):
ncurses-6.0-6.20160709.fc24

How reproducible:
I regret, I have no reproducer to deterministically reproduce them. For me, its sufficent to open an xfce4-terminal and work inside of it (e.g. cut'n'paste, use backspace, history, etc) to watch the problems after some time.

Actual results:
When downgrading ncurses to ncurses-6.0-5.20160116.fc24 these problems immediately seem to vanish.

Comment 1 Miroslav Lichvar 2016-08-08 12:43:38 UTC
Does it happen in xterm too? As for reproducing, you could record your session with script(1) and then cut the part which shows the problem.

Comment 2 Ralf Corsepius 2016-08-12 16:57:02 UTC
Sorry for not having responded earlier, but this bug seems nasty.

So far, I only observing these issues on one machine (Intel i5-4570 with built-in graphics), but not on others. However, this doesn't mean much, as this is my primary machine, I am using every day.

On this machine, with ncurses-6.0-6.20160709.fc24 and 
- kernel-4.5.x, I am not observing any problems.
- kernel-4.6.5, I am observing "a larger number" of issues, seemingly accumulating with uptime (>> 24hrs).
- kernel-4.6.6, so far I have observed "a smaller number" of issues, however insufficent uptime, yet, to know whether these are accumulating or not.

All in all, I am currently inclined to blame the kernel or some other low-level graphic related package/library/driver ;)

Comment 3 Ralf Corsepius 2016-08-13 06:32:26 UTC
FYI, I believe to have found an ncurses-6.0-6.20160709.fc24 incompatibility which shows in xfce4-terminal: https://bugzilla.redhat.com/show_bug.cgi?id=1366824

It's apparently caused by the ncurses update to ncurses-6.0-6.20160709.

Comment 4 Fedora End Of Life 2017-07-25 22:17:50 UTC
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Comment 5 Fedora End Of Life 2017-08-08 16:19:21 UTC
Fedora 24 changed to end-of-life (EOL) status on 2017-08-08. Fedora 24 is
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