30Hz on HDMI with 6.12.10-2 #367
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My best guess it is now only using 2 DP lanes instead of 4. That is a possible scenario based on changes I did. I'll take a look. |
Same with 6.12.10 here. |
jannau
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Jan 21, 2025
phy_validate() on the DP only ATC phy returns 0 lanes if it happens before the phy_set_mode(PHY_MODE_DP). Since this is the only known case default to 4 lanes as the phy is used exclusively for DP. Fixes: #367 Signed-off-by: Janne Grunau <[email protected]>
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hunch was correct. fixes in b9ec224 but not yet tagged/released |
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Good monring!
With kernel 6.12.10-2 I suddently get a max refreshrate of 30Hz on a 4k display via HDMI on my m1 macbook pro. With 6.12.9-1 everything is fine and i get 60Hz as expected. Rest of the system did not change, and a revert to the previous kernel fixes the issue.
I have not yet tried 6.12.10-1 or 6.12.9-2.
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