Arch Linux

jrmrjnck

Member

From: USA

Registered: 2011-01-17

Posts: 32

kdbg crashes with MNG error 11

Starting a couple months ago, kdbg fails to start, instead outputting the following error:

kdbg(13170)/kdeui (KIconLoader) KIconLoader::iconPath: Illegal icon group:  16
MNG error 1060: MHDR simplicity indicates unsupported feature(s); chunk MHDR; subcode 0:0
MNG error 11: Function is invalid at this point; chunk MHDR; subcode 0:0

The last line is then repeated ~27500 times. After selectively downgrading packages to find the problem, it turns out that downgrading qt4 from the latest (qt4-4.8.5-2) to the previous version (qt4-4.8.5-1) fixes the problem. It still outputs the first error about "Illegal icon group" but nothing about MNG. Does anyone have an idea about where the problem actually lies? I don't know whether to report this to qt, kdbg, or Arch.

saedelaere

Member

Registered: 2009-04-24

Posts: 30

Re: kdbg crashes with MNG error 11

Starting a couple months ago, kdbg fails to start, instead outputting the following error:

kdbg(13170)/kdeui (KIconLoader) KIconLoader::iconPath: Illegal icon group:  16
MNG error 1060: MHDR simplicity indicates unsupported feature(s); chunk MHDR; subcode 0:0
MNG error 11: Function is invalid at this point; chunk MHDR; subcode 0:0

The last line is then repeated ~27500 times. After selectively downgrading packages to find the problem, it turns out that downgrading qt4 from the latest (qt4-4.8.5-2) to the previous version (qt4-4.8.5-1) fixes the problem. It still outputs the first error about "Illegal icon group" but nothing about MNG. Does anyone have an idea about where the problem actually lies? I don't know whether to report this to qt, kdbg, or Arch.

Any progress on this issue? I am facing the same problems.

reinhardd

Member

From: Mosbach Germany

Registered: 2013-11-17

Posts: 2

Re: kdbg crashes with MNG error 11

Having the same issue.

Seems to be a problem with mng encoding.
Removing /usr/share/apps/kdbg/icons/hicolor/22x22/actions/pulse.mng helps me.

jrmrjnck

Member

From: USA

Registered: 2011-01-17

Posts: 32

Re: kdbg crashes with MNG error 11

I think the icon is corrupted - gwenview can't open it. So deleting the icon is probably a better workaround than downgrading qt4.

However, according to the git logs, the icon hasn't changed in over three years, so I wonder why it used to work and now it doesn't.

dimich

Member

From: Kharkiv, Ukraine

Registered: 2009-11-03

Posts: 263

Re: kdbg crashes with MNG error 11

However, according to the git logs, the icon hasn't changed in over three years, so I wonder why it used to work and now it doesn't.

I guess previous versions of QT used it's own library to decode MNG file, now it uses system-wide, or vice versa.