RPi screensettings lost after reboot

I use the RC8 Image with my own MDF (1360×768@68Hz) for the Lapdock.
Now I have try any of the latest 5.19 ROMs for the RPi. I change the screensettings to my MDF and this is working fine but after reboot the RPi build in settings are back. The configure entry in Predesk is the right for my resolution.
If I go back to the ROM from RC8, I set up my resolution and it works also after a reboot.

is the LoadModeFile entry in predesk set correctly (i.e. pointing at your mdf)? I’m sure something changed mine behind my back, whilst I was updating things on my lapdock over the last few days.

I’m not sure what you mean. Is there a difference in predesk for the original RC8 ROM and for the newer ones? LoadModeFile entry? In PreDesk.Configure is a Monitor Obey and the settings in this are correct. If these entries are not set appropriately when I have configure a monitor via Configure → Screen?

Yes I was referring to the obey file PreDesk.Configure.Monitor. I think for me, when I used Packman to update the ROM to the nightly build, I lost my screen settings both via !configure and the obey file.

Ok, I think I was probably just barking up the wrong tree with my first suggestion. I did just try changing my refresh rate to 68 and I got the same issue as you (defaults to 1080p). I use 70Hz so try that (in PreDesk.Configure.Monitor). I have no idea why there would be this change of behaviour.

Edit: I’m also sure that I had to manually select 70Hz in the monitor obey file, and that the !configure → screen settings with my custom mdf file resulted in a 60Hz refresh rate. Maybe refresh rate can be set in mdf / is set incorrectly in our mdf files? (I haven’t got this far yet, I just copy-pasted a lapdock mdf from this forum – I haven’t played around with it too much yet).

I use my own MDF on all my machines. No Problem. The MDF works. I can set up this via !Configure Screen andist works for this session but it will be lost after restart. The settings in PreDesk.Configure.Monitor are ignored.
You can play around with the parameter in the MDF. A little bit more bandwith give a little bit more refresh rate.

Thanks Raik, I have a better understanding of how the MDFs are set up now. I have just been playing with !MakeModes and created an MDF I can call my own.

I have no idea why your settings are ignored on reboot. Are you using the latest nightly ROM? Did you also install the latest HardDisk4 archive? Does this happen on a “fresh” system with only your MDF and no other custom stuff? Do you wish someone more informed would respond to your problem? :)

You can also use GetMonInfo .
The problem is, I think I know what I do and it works not. It works only with my a9home, BIK (ARMini), PIK (ARMiniX) and with my RPi with the RC8 ROM but not with the latest RPi 5.19 ROMs. Is the latest 5.21? I have not try.

Yes the latest is 5.21, although the zip filename suggest it is still 5.19. Maybe a bug arose and has now been fixed?

GetMonInfo doesn’t seem to generate any meaningful modes on the rpi (returning resolutions of 248×155 on my lapdock). I don’t have another machine with risc os.

Not fixed. With the last 5.21 (16-06) it works also not. Set the Screen it works after reboot the settings lost. Back to 5.19 … all things fine.

I have the same problem using 5.21 on RPCemu – see my post here

Mike