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Can't print with latest cups 2.4.15
Posted: 29. Nov 2025, 20:26
by gapan
Just a heads up. Slackware has upgraded cups to version 2.4.15 and it seems that there is an issue with the package, as I can't print anymore from multiple computers. Downgrading to version 2.4.14 makes printing work OK. What's worse is that it doesn't just not print, the app that tries to print hangs and consumes 100% CPU until you kill it. Looking into it, if Slackware does not provide a fix soon, I might have to package it for the Salix repos anyway.
You can get an older cups package from here:
https://backup.salixos.org/weekly.1/rep ... /packages/ (64bit) or
https://backup.salixos.org/weekly.1/rep ... /packages/ (32bit)
Re: Can't print with latest cups 2.4.15
Posted: 30. Nov 2025, 13:18
by gapan
OK, so I downgraded to version 2.4.14 in our own repos for now. If slackware fixes the issue with 2.4.15 we'll get back to that.
Re: Can't print with latest cups 2.4.15
Posted: 1. Dec 2025, 12:06
by djemos
Slackware in both stable and current roll back to 2.4.14 cups.
Re: Can't print with latest cups 2.4.15
Posted: 1. Dec 2025, 13:09
by gapan
LOL
Re: Can't print with latest cups 2.4.15
Posted: 2. Dec 2025, 12:21
by djemos
This cups-check-for-data.patch solves the problem with cups 2.4.15. I recompiled cups and it is working. Just wait for slackware to use it.
Code: Select all
--- a/cups/http.c 2025-12-03 16:55:34.714957932 +0100
+++ b/cups/http.c.new 2025-12-03 16:58:31.332742773 +0100
@@ -2779,7 +2779,7 @@
/* See whether our read buffer is full... */
DEBUG_printf(("2_httpUpdate: used=%d", http->used));
- if (http->used > 0 && !memchr(http->buffer, '\n', (size_t)http->used) && (size_t)http->used < sizeof(http->buffer))
+ if (http->used < sizeof(http->buffer))
{
/* No, try filling in more data... */
if ((bytes = http_read(http, http->buffer + http->used, sizeof(http->buffer) - (size_t)http->used, /*timeout*/0)) > 0)