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media: cx231xx: Fix Elgato Video Capture V2 default norm for PAL regions #149

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media: cx231xx: Fix Elgato Video Capture V2 default norm for PAL regions #149

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12 changes: 12 additions & 0 deletions 6.19/misc/0001-cx231xx-elgato-v2-fix-pal-norm.patch
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@@ -0,0 +1,12 @@
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@1Naim 1Naim Apr 3, 2026

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Remove backtick

--- a/drivers/media/usb/cx231xx/cx231xx-cards.c
+++ b/drivers/media/usb/cx231xx/cx231xx-cards.c
@@ -637,7 +637,7 @@
.ctl_pin_status_mask = 0xFFFFFFC4,
.agc_analog_digital_select_gpio = 0x0c,
.gpio_pin_status_mask = 0x4001000,
- .norm = V4L2_STD_NTSC,
+ .norm = V4L2_STD_PAL,
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@1Naim 1Naim Apr 3, 2026 •
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What about V4L2_STD_ALL? I worry this change regresses people that are using NTSC.

edit: I think V4L2_STD_NTSC | V4L2_STD_PAL should also work, and is more conservative compared to V4L2_STD_ALL, can you first test the former before testing the latter? Thanks.

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@TaterYo TaterYo Apr 3, 2026

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Thanks for the feedback! I tested both V4L2_STD_NTSC | V4L2_STD_PAL (0x00000fff) and V4L2_STD_ALL (0xffffffff) via v4l2-ctl at runtime but both still produce a scrambled image. The issue is that the cx25840 decoder chip ignores runtime standard changes on this device — the norm must be set correctly in the driver card definition for the hardware to initialize properly at firmware load time. Changing to V4L2_STD_PAL in the card definition is the only fix that works. I'm based in Norway so PAL is correct for my region. Happy to test any other suggestions!

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@1Naim 1Naim Apr 3, 2026

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Can you report this to kernel bugzilla? I don' think I can accept this change due to aforementioned regression.

.no_alt_vanc = 1,
.external_av = 1,
.input = {{