On Sun, Aug 10, 2014 at 2:42 AM, Robert Heller <heller at deepsoft.com> wrote: > Ok, it is consistent and repeatable: > > *Everytime* I do a routine 'yum update' on the CentOS 6.5 server (64-bit) the > printers (both of them networked laser printers, one an [old] HP Laserjet 4200 > and one a [new] Brother MFC-9970CDW), cups loses the ability to print (its > filter chain becomes broken). According to the CUPS mailing list, this error > is 'never' because of of problem with cups, but always with the 'underlying > operating system' -- eg the 'underlying operating system' has messed with the > filters CUPS uses for the printers. I have not experienced any broken chains. With generic (Debian Wheezy) driver my Samsung 1640 printer would not print any pages randomly. cups administration (localhost:631) would show things are fine. At times a cups restart would help. > > So is this a *known* problem? Or is there something Redhat has done to the > distributed cups RPM (or is it something the CentOS developers have done to > the Redhat source rpm)? I don't think so. My problem with Samsung 1640, were on Debian. > > The *appearent* cure (workaround?) is to delete the printers, and re-install > them. Yes, it would work for a while for me. > Has anyone else had this problem? In my case, I installed the printer driver for 1640 from Samsung's support site and things have more stable for me. -- Arun Khan