I have managed to find a way to keep aspect ratio on my Lenovo laptop which supports only the video mode 1366x768 in 64k colors in VESA mode. The cool thing is that the 1366x768 driver in Geos supports the mode on my Lenovo laptop, but it eventually crashes. Other VESA modes works flawlessly, but at the price that the image gets streched and distorted. I have found a workaround, if I use the 1366x768 driver and the use Jörg Polzfuss Monitoreinstellungen and set the resolution in Jörgs app in Geos to 1280x768, my Geos is stable, no crash anymore. And the aspect ratio is correct. On the downside is that I don't use the whole monitor, I have a black bar to the right, however, I can live with that.
The other problem is that some of the desktop icons are monochrome. Any hint to solve that?
All the tiny icons are correct.
I have also come to the conclusion that the initial problem with the crash in Geos with the 1366x768 driver is probably not caused by bugs in the driver, since the driver works with the setting 1280x768. I think that there is problems with other system files in Geos, like for example UI.GEO, which support is limited to 1280x1024, which is the highest VESA mode. The 1366x768 is not a VESA resolution even if Intel have defined it that way in the Braswell chipset, and maybe in their other chipsets, which supports 1366x768.
Hans