On Wed, Mar 18, 2020 at 11:05:21AM +0100, Cezary Rojewski wrote:
On 2020-03-18 10:57, Dominik Brodowski wrote:
Unfortunately, I cannot bisect this issue easily -- i915 was broken for quite some time on this system[*], prohibiting boot...
Hmm, sounds like that issue is quite old. DSP for Haswell and Broadwell is available for I2S devices only, so this relates directly to legacy HDA driver. Compared to Skylake+, HDAudio controller for older platforms is found within GPU. My advice is to notify the DRM guys about this issue.
Takashi, are you aware of problems with HDMI on HSW/ BDW or should I just loop Jani and other DRM peps here?
Well, it works on v5.5, so this issue is not really "quite old" (the "no context buffer need to restore!" message seen there seems harmless).
Thanks again, and best wishes, Dominik
Was commenting the "i915 was broken for quite some time on this system[*], prohibiting boot...". Unless I misunderstood you, this ain't a DSP driver issue but HDAudio/iDisp one. Essentially, these are two issues you mentioned here.
Ah, sorry for the confusion. That issue was introduced post v5.5 as well, but fixed for v5.6-rc4 -- meaning that it works now, but that bisecting between v5.5 and v5.6-rc4 is not working as such.
Thanks, Dominik