boot delay with drm_kms_helper.edid_firmware

[Robert Kuhn]

Hi,

thanks for the answer. This is my kernel config:

    developer at ubuntu:~/beaglebone/debian-fw/bb-kernel/KERNEL$ grep
FW_LOADER_USER_HELPER .config
    developer at ubuntu:~/beaglebone/debian-fw/bb-kernel/KERNEL$ grep DRM
.config
    CONFIG_DRM=y
    CONFIG_DRM_KMS_HELPER=y
    CONFIG_DRM_LOAD_EDID_FIRMWARE=y
    CONFIG_DRM_GEM_CMA_HELPER=y
    CONFIG_DRM_KMS_CMA_HELPER=y
    # CONFIG_DRM_I2C_CH7006 is not set
    # CONFIG_DRM_I2C_SIL164 is not set
    CONFIG_DRM_I2C_NXP_TDA998X=y
    # CONFIG_DRM_UDL is not set
    CONFIG_DRM_TILCDC=y
    # CONFIG_DRM_OMAP is not set


I am quite sure that in the end kernel finds firmware because otherwise the
display isn't working. I only get a image on the display if my edid file is
used.

Robert


2015-01-14 11:40 GMT+01:00 Jani Nikula <jani.nikula at linux.intel.com>:

> On Wed, 14 Jan 2015, Robert Kuhn <spamhalde2 at fastmail.fm> wrote:
> > using drm_kms_helper.edid_firmware the boot time is much longer (~1min)
> > than without it. I attach the boot log ("drm.debug=0x06"), one time
> > with drm_kms_helper.edid_firmware, one time without.
> >
> > What could be the problem?
> >
> > I am using Kernel 3.8.13-bone69 on a Beaglebone black. I
> > used drm_kms_helper.edid_firmware before and never saw this issue.
>
> Just a guess, kernel doesn't find the firmware and you fallback to user
> mode helper, which is no longer supported by udev.
>
> Try ensuring you have the path right, and disable FW_LOADER_USER_HELPER
> kernel config option.
>
> HTH,
> Jani.
>
> --
> Jani Nikula, Intel Open Source Technology Center
>
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