Hello Noralf,
On 12/15/21 22:37, Noralf Trønnes wrote:
Den 15.12.2021 01.59, skrev Javier Martinez Canillas:
According to disable Documentation/admin-guide/kernel-parameters.txt, this parameter can be used to disable kernel modesetting.
DRM drivers will not perform display-mode changes or accelerated rendering and only the systewm system framebuffer will be available if it was set-up.
But only a few DRM drivers currently check for nomodeset, make this driver to also support the command line parameter.
Signed-off-by: Javier Martinez Canillas javierm@redhat.com
I don't understand why this is applicable to USB drivers, there's no way the firmware can setup a framebuffer and continue pushing pixels over USB when Linux has been given control over the USB bus?
The same argument goes for the SPI drivers in drm/tiny/ as well.
That's a very good point. I included these mostly for consistency but if it's OK for the KMS drivers to just ignore the "nomodeset" parameter, I could drop all that are not for devices in the PCI or platform buses.
Best regards,