Thread: Kobo Sage - Calibre 3.48
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Old 11-08-2021, 07:31 PM   #48
davidfor
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Quote:
Originally Posted by Nikoz View Post
I don't know if it works on win7 32bits, I don't see why it wouldn't. The restriction seems to be purely a programmer's choice; the setup program refuses to execute on Windows older than 8 but the calibre program itself (portable version in a zip, not installed) runs fine on 7.
Yes, it is the developers choice. As it always is. But, the choice was based on experience with Windows 7 and the Qt libraries being used. The issue is that Qt is requiring certain thing from the graphics drivers. As they are not being updated in Windows 7, and there is no way to predict which combination will fail, the developer decided he had to stop support. He didn't do that lightly, but, his experience with this sort of thing meant he had little choice. If he continued the support he would then be spending a significant amount of his time investigating why individual reports on Windows 7 didn't work and trying to fix them. Or reporting them to Qt and waiting for the fix from there. And his experience there is that the fix would never appear.

The issue now is that we don't actually know that calibre is working properly for all functions. Unless you have used all parts of calibre extensively, you don't know for sure. And as you are only running it on one hardware combination, that says nothing about any other combination. And @koboy's report is virtually meaningless. He has already stated he does not use calibre, so how the hell does he actually know if it is working correctly. And his measurement of "working" would have been the simplistic open calibre, open one book in the viewer, open one book in the editor and then close everything. I don't remember how the problems appeared, so, I can't say how useful any of that is.

And I would actually think that the problems would be more likely to occur on Win7 32bits. The issue is drivers. Were the 32bit versions maintained to the same level as the 64bit drivers? I would bet that updating some 32bit drivers were stopped a long time before the 64bit drivers.

Of course, none of these reports mean anything as the only two people have actually stated they have issues are not running Window7 64bit. One is using a MAC, the other Windows7 32bit. Nothing said here helps the former, and we don't actually know what happens with the latter.
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