problem after upgrade to Qt-4.5.0

kolcon · 2009-03-08 12:58:42

After the system was upgraded to qt-4.5.0, I cannot get certain
applications to work (skype, virtualbox, maybe others).

When I start them, the fonts look like this:
http://lh6.ggpht.com/_WiWkiK738Q0/SbPA3 … 800/qt.png

Do you have any idea why or should I file a bug?
Thanks

ChemBro · 2009-03-08 19:01:00

Maybe you have to recompile your qt-applications, I think.

kolcon · 2009-03-08 20:08:41

rebuild virtualbox_bin, did not help

chair · 2009-03-08 23:51:17

Turn off 'Sub-pixel rendering.'

kolcon · 2009-03-09 10:59:31

Yes, that helped, thank you

bernarcher · 2009-03-09 11:11:11

chair wrote:

Turn off 'Sub-pixel rendering.'

Interesting surprise. Is there a bug report to follow?

kolcon · 2009-03-09 11:13:27

bernarcher wrote:

chair wrote:
Turn off 'Sub-pixel rendering.'
Interesting surprise. Is there a bug report to follow?

No, should I open one? where? Arch or some upstream?

chair · 2009-03-09 13:18:41

I thought it would be an upstream bug, since KDE 4.2 isn't really supported with Qt 4.5.

kolcon · 2009-03-09 13:30:33

i do not have kde at all, but obviously it somehow sneaked in via the testing repository

attila · 2009-03-13 09:30:23

chair wrote:

Turn off 'Sub-pixel rendering.'

Is this a bug of qt or a new feature of qt that makes Sub-pixel rendering unnecessary? I'm a little bit surprised about that i have to turn off a feature which looks nice for me only for some qt apps.

Pierre · 2009-03-13 09:45:04

Do you guys use by chance nvidia? Subpixelrendering works fine here.

Prew · 2009-03-13 12:24:39

Same problem here (nvidia drivers).

Pierre · 2009-03-13 12:32:13

Try the vesa or nv drivers.

attila · 2009-03-13 14:00:04

Pierre wrote:

Try the vesa or nv drivers.

Why the hell the nvidia drivers have so much problems with kde4/qt4.5 but not with qt3/qt4.4.3/kde3 ... sorry, this is nothing against you and your work but i'm a little bit frustated that the overvalue of the "newer" versions is getting lesser and lesser. But okay, i think positive and will step back to the qt version before. Thank you very much for this information.

ziabice · 2009-03-13 14:10:25

I have the same issue with an ATI HD4850, using the following drivers:

xf86-video-ati: good fonts
xf86-video-radeon: bad fonts
catalyst 9.2: bad fonts

Some time ago I used an early qt 4.5 snapshot with KDEmod on a NVIDIA card (with closed source drivers) and I had the same problem.

I suspect the X rendering acceleration for this issue.

Skripka · 2009-03-13 14:24:07

Prew wrote:

Same problem here (nvidia drivers).

No issues here after upgrade to Qt4.5 with Nvidia 180.29 on KDEmod4.2.1

I did have some strange kded hanging after reboot...but after a full shutdown and reboot things are pretty much normal. No font issues here-although some fonts in plasma widgets are monospace (I think) rather than what I have set...which was not the case before.

Pierre · 2009-03-13 14:41:01

attila wrote:

Pierre wrote:
Try the vesa or nv drivers.
Why the hell the nvidia drivers have so much problems with kde4/qt4.5 but not with qt3/qt4.4.3/kde3 ... sorry, this is nothing against you and your work but i'm a little bit frustated that the overvalue of the "newer" versions is getting lesser and lesser. But okay, i think positive and will step back to the qt version before. Thank you very much for this information.

Afaik the new Qt and KDE versions make more use of hardware accelerations. But I am quite sure its a problem with drivers/hw and not related to Qt. I have no problems on a 7800Gt, but I have seen rendering issues on a Geforce 6. Software configuration was identical.

Pierre · 2009-03-13 14:42:15

Skripka wrote:

Prew wrote:
Same problem here (nvidia drivers).
No issues here after upgrade to Qt4.5 with Nvidia 180.29 on KDEmod4.2.1
I did have some strange kded hanging after reboot...but after a full shutdown and reboot things are pretty much normal. No font issues here-although some fonts in plasma widgets are monospace (I think) rather than what I have set...which was not the case before.

If you use kdemod you should wait until they updated their packages. Just give them any chance to do so. :-) It is known that a stock KDE 4.2 has problems with Qt 4.5.

Skripka · 2009-03-13 14:46:08

Pierre wrote:

Skripka wrote:
Prew wrote:
Same problem here (nvidia drivers).
No issues here after upgrade to Qt4.5 with Nvidia 180.29 on KDEmod4.2.1
I did have some strange kded hanging after reboot...but after a full shutdown and reboot things are pretty much normal. No font issues here-although some fonts in plasma widgets are monospace (I think) rather than what I have set...which was not the case before.
If you use kdemod you should wait until they updated their packages. Just give them any chance to do so. :-) It is known that a stock KDE 4.2 has problems with Qt 4.5.

KDEmod just updated their stable repos to Qt4.5.0-3 yesterday.

If KDE4 has major issues with Qt4.5, I barely notice it.

Last edited by Skripka (2009-03-13 14:47:01)

Pierre · 2009-03-13 14:54:05

No they did not. That's why I said you better wait. There are no major issues though; e.g. problems with utf8 filenames or broken lancelot.

Skripka · 2009-03-13 15:06:42

Pierre wrote:

No they did not. That's why I said you better wait.

Wierd...I have KDEmod stable x86_64 on my box, and upgraded last night (US time), with Qt4.5.0-3 and a few other things. (????)

Pierre · 2009-03-13 16:04:30

Qt is not part of kdemod, its from extra. But I think we are goinf off-topic here. :-)

So, if you have rendering problems:
Try other drivers (free ones or even vesa)
Play with XAA, EXA or UXA options
The subpixel issue is interesting. How did you guyes enable it? Via KDE systemsettigns or /etc/fonts? Which fonts do you use? Do those gliteches appear everytime or randomly?

Last edited by Pierre (2009-03-13 16:13:21)

attila · 2009-03-13 16:50:32

Pierre wrote:

Afaik the new Qt and KDE versions make more use of hardware accelerations. But I am quite sure its a problem with drivers/hw and not related to Qt. I have no problems on a 7800Gt, but I have seen rendering issues on a Geforce 6. Software configuration was identical.

There be 2 points about it:

1. Ironical: If the price for the use of hardware acceleration in KDE/Qt is to use the vesa or the unaccelerated nv driver than the developper have spent their time for nothing.

2. I believe you that different hardware with the same config operates in another way but we speak about bad fonts output and this has to work for all drivers (xorg, nvidia and ati) as before. If not this is the problem of the follower from Qt and not of the unchanged rest of the system. But this be only my 2c and as you i don't want to get too much off topic.

Kariddi · 2009-03-13 18:35:46

QT4.5 broke Animated GIFs and PNGs in KHTML

Prew · 2009-03-13 20:41:28

Pierre wrote:

Try the vesa or nv drivers.

The problem occurs also on vesa and nv drivers.
Everything is OK on a new created account.
I disable subpixel via systemsettings.

EDIT: Problem solved by removing ~/.fonts.conf

Last edited by Prew (2009-03-13 21:01:35)

Arch Linux

#1 2009-03-08 12:58:42

problem after upgrade to Qt-4.5.0

#2 2009-03-08 19:01:00

Re: problem after upgrade to Qt-4.5.0

#3 2009-03-08 20:08:41

Re: problem after upgrade to Qt-4.5.0

#4 2009-03-08 23:51:17

Re: problem after upgrade to Qt-4.5.0

#5 2009-03-09 10:59:31

Re: problem after upgrade to Qt-4.5.0

#6 2009-03-09 11:11:11

Re: problem after upgrade to Qt-4.5.0

#7 2009-03-09 11:13:27

Re: problem after upgrade to Qt-4.5.0

#8 2009-03-09 13:18:41

Re: problem after upgrade to Qt-4.5.0

#9 2009-03-09 13:30:33

Re: problem after upgrade to Qt-4.5.0

#10 2009-03-13 09:30:23

Re: problem after upgrade to Qt-4.5.0

#11 2009-03-13 09:45:04

Re: problem after upgrade to Qt-4.5.0

#12 2009-03-13 12:24:39

Re: problem after upgrade to Qt-4.5.0

#13 2009-03-13 12:32:13

Re: problem after upgrade to Qt-4.5.0

#14 2009-03-13 14:00:04

Re: problem after upgrade to Qt-4.5.0

#15 2009-03-13 14:10:25

Re: problem after upgrade to Qt-4.5.0

#16 2009-03-13 14:24:07

Re: problem after upgrade to Qt-4.5.0

#17 2009-03-13 14:41:01

Re: problem after upgrade to Qt-4.5.0

#18 2009-03-13 14:42:15

Re: problem after upgrade to Qt-4.5.0

#19 2009-03-13 14:46:08

Re: problem after upgrade to Qt-4.5.0

#20 2009-03-13 14:54:05

Re: problem after upgrade to Qt-4.5.0

#21 2009-03-13 15:06:42

Re: problem after upgrade to Qt-4.5.0

#22 2009-03-13 16:04:30

Re: problem after upgrade to Qt-4.5.0

#23 2009-03-13 16:50:32

Re: problem after upgrade to Qt-4.5.0

#24 2009-03-13 18:35:46

Re: problem after upgrade to Qt-4.5.0

#25 2009-03-13 20:41:28

Re: problem after upgrade to Qt-4.5.0

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