[Wayland-bugs] [Bug 101472] compositor-fbdev: Added parameter --pixman-type

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101472

--- Comment #4 from Oliver Smith <ollieparanoid at bitmessage.ch> ---
Hi Pekka,

I am also involved with postmarketOS.

> Are you sure this is a bug in the kernel driver and not in weston's calculate_pixman_format()?

We are *not* sure about that. Could you tell us how to find that out?

> Is it not possible to fix the kernel drivers to improve things for everyone rather than just for Weston users? Are the drivers proprietary, binary-only? Are there no FOSS alternatives?

The drivers are open, but right now we're trying to get Weston running on a lot
of smartphones, which sadly all run their own fork of some outdated Android
kernel.
In the long run, we would really like to have them all run on mainline and have
proper drivers (that's the *real* fix for everyone!), but that surely won't
happen over night if ever, so we propose this patch as a solution for
in-between.

I have already proposed a patch for another (possibly phone-only) issue, which
appeared on the Nexus 4, that got accepted:
https://patchwork.freedesktop.org/patch/150943/

Last but not least, the patch is just a few lines of code and *adds* a
command-line parameter. That might even be useful for other people to quickly
check if their driver *would* work if the pixman type was swapped (without
recompiling Weston or their kernel), before they could do a proper fix in the
kernel driver.

So... do you think, this patch has a chance to get accepted, when we fix the
description and add the signed-off-by line and send it in via mail, or not?
(Which would then lead to a bit more fragmentation, as we'd need to carry that
patch around.)

Thank you and best regards,
Oliver Smith

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