QIconvCodec::convertFromUnicode: using Latin-1 for conversion, iconv failed for BOM: Bad file descriptor

cbrake · wrote on 23 Sept 2010, 15:14

Hello, I am running qt 4.7.0 with some QML code on a embedded ARM system. When I start the app I see:

QIconvCodec::convertFromUnicode: using Latin-1 for conversion, iconv failed for BOM: Bad file descriptor
QIconvCodec::convertFromUnicode: using Latin-1 for conversion, iconv_open failed
QIconvCodec::convertToUnicode: using Latin-1 for conversion, iconv_open failed

And the fonts are square boxes in the app. Any suggestions as to what is wrong, or how I can debug?

I'm running Qt on top of X11.

Thanks,
Cliff

cbrake · wrote on 23 Sept 2010, 19:49

the QIconvCodec messages appear to be benign.

The problem with the square boxes for fonts was simply that I did not have ttf fonts installed on my target system.

luca · wrote on 7 Dec 2010, 10:15

Hi,

I have the same problem with BeagleBoard.

Have you solved?

Mirgas · wrote on 7 Jul 2011, 12:11

Hi, I have the same problem...
Did you solved it ? Do you remember how ?

Thanks in advance.

loladiro · wrote on 7 Jul 2011, 12:19

[quote author="cbrake" date="1285271356"]the QIconvCodec messages appear to be benign.

The problem with the square boxes for fonts was simply that I did not have ttf fonts installed on my target system.[/quote]
The original problem seemed to have been missing fonts. Without more information about what you're trying to do, we won't be able to help you.

Mirgas · wrote on 7 Jul 2011, 12:31

I am just trying to launch a Qt app.
How can I know which fonts Qt is trying to use ?
Where the fonts are supposed to be ?
Because I have fonts installed on my system, I can see them using fc-list.

An exemple of the problem :
http://imageshack.us/photo/my-images/155/screenshotmcb.png/

Thanks.

Mirgas · wrote on 8 Jul 2011, 08:36

Solved it !

I needed to update the xorg.conf file :

Section "Files"
FontPath "/usr/share/fonts/X11/100dpi"
FontPath "/usr/share/fonts/X11/75dpi"
FontPath "/usr/share/fonts/default/ghostscript"
....
EndSection

I still have the error message, but the fonts are displaying correctly...

pierrevr · wrote on 11 Apr 2012, 13:11

Hi, excuse me if the thread I'm reviving is already quite old, but I don't see a suggested solution here. I"m currently debugging something, so I'd like to cover alle the bases. I don't think it keeps the app from functioning, but who knows...

I am having the same error message when I start any applications, using Qt 5 with the EglFS and Wayland plugins.

bq. QIconvCodec::convertFromUnicode: using Latin-1 for conversion, iconv_open failed
QIconvCodec::convertToUnicode: using Latin-1 for conversion, iconv_open failed

Any ideas what this could be? I don't have X, and all fonts are installed... I've been working on Qt 5 since around 2 months now, and it appeared just recently.

I am also working on an ARM platform. Freescale i.MX515 to be exact.

omatrix · wrote on 21 May 2012, 13:43

It seems that your Qt libs are not correct versions on target platform. you can copy libQtCore and other needed libs to your target platform Qt lib path.

chiscou · wrote on 19 Feb 2013, 16:45

Pierrevr

I got it to work when i unselected "install full modular Xorg server" on my ltib menu.

Also installed liberation fonts.

Vijaykumar Ponugoti · wrote on 9 May 2015, 05:08

Hi all,
I am also facing the same problem. I am trying to build qt5.2 with opengl es2 for my arm controller using the configuration
./configure -prefix /usr/qte5.2 -release -make libs -make examples -nomake tools -xplatform linux-omap5-g++ -opengl es2 -confirm-license -opensource -no-xcb -no-pch -verbose -kms -sysroot /home/medha/ti-glsdk_dra7xx-evm_7_00_00_04/targetfs -v -no-icu

After make install I am able to find all the cross compiled libraries. But I counld not find the fonts folder.
I copied all the libraries onto my target and tried executing some application but I am gettitng error as follows.

root@dra7xx-evm:~# ./Wid1 -platform kms
QIconvCodec::convertFromUnicode: using Latin-1 for conversion, iconv_open failed
QIconvCodec::convertToUnicode: using Latin-1 for conversion, iconv_open failed
QSocketNotifier: Can only be used with threads started with QThread
QSocketNotifier: Can only be used with threads started with QThread
QSocketNotifier: Can only be used with threads started with QThread
root@dra7xx-evm:~#

Please help me in this regard.

Thanks a lot,
Vijay