[elrik]

Hi piotrasd,
after read this bug https://bugs.freedesktop.org/show_bug.cgi?id=94248 I'm searching in my log for drm and found that

Code:

[  376.386883] [drm:intel_dp_read_desc] DP branch: OUI 00-60-ad(NS) dev-ID MC2800 HW-rev 2.2 SW-rev 1.56
[  376.387164] [drm:intel_dp_detect] Sink is not MST capable

That reference the megachips mdcp2800 but i think the kernel or drm no detect lspcon called in the documentation
https://media.digikey.com/pdf/Data%20She...asheet.pdf

i search in google this lines and i found this log https://bugs.freedesktop.org/attachment.cgi?id=127587
You can read this lines:

Code:

[   28.718908] [drm:lspcon_init [i915]] Current LSPCON mode PCON
[   28.725846] [drm:intel_dp_read_dpcd [i915]] DPCD: 12 14 c4 01 01 15 00 01 00 00 04 00 0f 00 00
[   28.735965] [drm:intel_dp_read_desc [i915]] DP branch: OUI 00-60-ad(NS) dev-ID MC2800 HW-rev 2.1 SW-rev 1.39
[   28.747006] [drm:lspcon_init [i915]] Success: LSPCON init
[   28.753088] [drm:intel_ddi_init [i915]] LSPCON init success on port B
[   28.760354] [drm:intel_dp_init_connector [i915]] Adding DP connector on port C
[   28.768500] [drm:intel_dp_init_connector [i915]] using AUX C for port C (VBT)
[   28.776572] [drm:intel_hdmi_init_connector [i915]] Adding HDMI connector on port C
[   28.785112] [drm:intel_hdmi_init_connector [i915]] Using DDC pin 0x2 for port C (VBT)
[   28.793920] [drm:intel_dsi_init [i915]]

This log use kernel 4.9-rc2 and i dont know what version of drm intel

Maybe you can compile one version with the lastest kernel or maybe need some patch for kernel like https://patchwork.kernel.org/patch/9383907/ i dont know if need activate some custom option in kernel. (many year i don't compile nothing,I could not do it right now)


I hope I'm not wrong and this is silly reasoning

Thanks in advanced for your help piotrasd and fritsch support.

And please... forgive my English