Intel fb debug output

[Johannes Kliemann]

Hi,

I want to enable the debug output in the Intel framebuffer (to see
messages printed by DRM_DEBUG_KMS). This is usually done by adding the
boot parameter `drm.debug=0xe`.

How would I enable this in Genode with Nova?

JK

[Stefan Kalkowski]

Hi Johannes,

Post by Johannes Kliemann
Hi,
I want to enable the debug output in the Intel framebuffer (to see
messages printed by DRM_DEBUG_KMS). This is usually done by adding the
boot parameter `drm.debug=0xe`.
How would I enable this in Genode with Nova?

in contrast to the original Linux kernel version, you have to change the
drm.debug value at compilation time when building for Genode. You can
change the value drm_debug here:

repos/dde_linux/src/drivers/framebuffer/intel/lx_emul.cc:811

best regards
Stefan

Post by Johannes Kliemann
JK
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[Johannes Kliemann]

Stefan Kalkowski, Josef Söntgen, thank you for the quick info.

[Josef Söntgen]

Hello Johannes,

Post by Johannes Kliemann
I want to enable the debug output in the Intel framebuffer (to see
messages printed by DRM_DEBUG_KMS). This is usually done by adding the
boot parameter `drm.debug=0xe`.
How would I enable this in Genode with Nova?

There is no user facing configuration knob in the intel_fb_drv. You have
to set the 'drm_debug' variable directly in the source code. It is located
at 'repos/dde_linux/src/drivers/framebuffer/intel/lx_emul.cc:821'.

Regards,
Josef