on my gaming PC, it never used the GPU.
In my experience, that is usually a problem with the GPU OpenCL drivers. Sadly, the Mesa OpenCL implementation didn’t include image support when I last checked (you can check with clinfo | grep "Image support"
). For AMD cards you need to have either the “pro” driver or ROCM installed, both aren’t packaged by all distros. Similar with Intel, don’t know about Nvidia, but I’m sure if it works, it’s only with the proprietary driver.
I ended up installing darktable in an arch distrobox container, as arch has ROCM packages (in AUR) and ever since GPU acceleration is working fine.
Well, of course a ticket, that was limited to three months did not have a lasting effect on car usage. No one would sell their car and switch to public transport because of such a short, temporary price reduction. Even the follow up ticket (costing 49€ currently) is only guaranteed for a year at a time, then the government has to discuss funding again with the federal states. To have people switch from cars completely, it has to be a long term alternative.
But even if only some trips are now done with public transport instead of car, it is still an improvement.
I agree with you, that a good quality is also important, but I don’t think it will happen, if the financing for improving the quality has to be primarily via ticket pricing.