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Bug#853843: sddm: does start the X server, but the screen remains black



¡Hola Laurent!

El 2017-03-11 a las 22:15 +0100, Laurent Bonnaud escribió:
On 11/03/2017 09:49, Maximiliano Curia wrote:

The first iteration is: https://freak.gnuservers.com.ar/~maxy/debian/sddm_regression_853843/sddm_0.14.0~39-1_amd64.deb

Thanks for this new build!  This one works.

After some iterations we found that the issue was introduced by the "greeter: Enable HiDPI" commit [1], which reveals a bug in QT 5's way to tweak the device geometry for HiDPI. There is a workaround provided upstream's HEAD [2], but the regression remains, and it's up to the users to add the configuration option, granted once the issue it's fixed in QT the configuration option shouldn't be needed anymore.

As a way to avoid this regression I'm setting the configuration option to false by default, that would retain the 0.13's behavior and the configuration option would only be needed when the user is using a 4k display in a graphic card where qt scaling factor's are handled correctly.

Happy hacking,

[1]: https://github.com/sddm/sddm/commit/1af96a059afe28afbb6143daf995449d4d4b140d
[2]: https://github.com/sddm/sddm/issues/699
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