Me too!
Ive had my UFX since December.
Windows 7 2009 laptop USB.
From the start i have not been able to resize totalmix to a bigger size.
Its about the same size as "rosstas" screen shot above.

Similar issue here:

Matrix view at its largest size is approximately: 4-1/2" x 2-1/2"
I can resize it to be smaller, but can not make it any larger.

TotalMix FX version 0.989 MAC OSX (1)

The default largest size used to be much larger. It changed a while back, I don't remember what version or when.

Thanks for the info. We think we know what causes the problem (the stunning screen resolution) and try to come up with a fix in the next days.

@fireheadfaceRed: The mixer has a fixed max size. This thread is about the Matrix.

Woah - leave town for two nights and come back to this! I love RME Oh and to answer your question Matthias I'm also on TotalMix FX version 0.989 MAC OSX (1)

This may or may not be related but about the same time I started getting the tiny matrix I also tried uninstalling all RME software in order to do a fresh install. I found and removed all the drivers via this thread:

'Removing the Fireface Driver on OSX' http://www.rme-audio.de/forum/viewtopic.php?id=9233

I then delete the Aggregate device in Audio/MIDI setup and empty the trash. Upon restart my Mac still sees my UFX in Audio/MIDI settings although it is greyed out. Am I missing a file or two? I feel something here is involved with my inability to do a fresh reinstall of my UFX.

More details of my setup: In addition to my UFX I'm using an API A2D as my master clock via AES/EBU In and 8 inputs each from a Presonus Digimax and a Focusrite Saffire Pro40 both clocked via ADAT. This setup has been working flawlessly for years. Last January I upgraded my old '08 iMac to a new '13 iMac i7 w/ 32G memory and it's been an absolute dream. I added an external Seagate hard drive two weeks ago and around that time started noticing a few small clicks in my recordings using tracks 1 & 2 of my UFX. While troubleshooting this I clicked the 'drift correction' box next to the Saffire unit under the default Aggregate Device (which I don't actually use but is apparently setup automatically by OSX) and I think that's when things got really messed up with my system. I've completely uninstalled that unit and removed it from the system and then go about uninstalling the UFX via the method described above but something in my computer still remembers my UFX. If I could figure this part out I'm hoping I could solve the rest of my puzzle.

Is this TOO much information?

Either way, thanks team RME. I've been with you guys for 7 years and have never had a problem that wasn't self-inflicted and/or easily solved.

~rossta1

PS. One more possibly relevant thing I almost forgot: around the same time I installed the Seagate (which is now out of my system) I also installed Pro Tools 9.06. I'm thinking about completely uninstalling that hellish program and seeing if things might settle down.

PROBLEM SOLVED: Okay this was simple...the size of the matrix screen is directly related to the Channel Layout and any channels that are or aren't hidden. If none are hidden there's no problem. Does that help those of you who were also experiencing this problem? Hope so!

Confirmed. The current way the size of the Matrix is calculated does not work correctly when channels are hiddden. So we have two things to fix. Thanks for finding this.

If you want us to check something you will have to provide ALL the details.