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Red Hat Bugzilla – Attachment 916524 Details for
Bug 806091
HDMI infoframes break LG Flatron display (regression)
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[patch]
Disable HDMI InfoFrames patch - Linux 3.12
linux-3.12-Add-EDID-quirk-to-disable-HDMI-InfoFrames.patch (text/plain), 947 bytes, created by
Ian Pilcher
on 2014-07-08 18:23:29 UTC
(
hide
)
Description:
Disable HDMI InfoFrames patch - Linux 3.12
Filename:
MIME Type:
Creator:
Ian Pilcher
Created:
2014-07-08 18:23:29 UTC
Size:
947 bytes
patch
obsolete
>diff -ur linux.orig/drivers/gpu/drm/drm_edid.c linux/drivers/gpu/drm/drm_edid.c >--- linux.orig/drivers/gpu/drm/drm_edid.c 2014-01-16 10:06:26.340024377 -0600 >+++ linux/drivers/gpu/drm/drm_edid.c 2014-01-16 10:27:12.327046075 -0600 >@@ -71,6 +71,8 @@ > #define EDID_QUIRK_FORCE_REDUCED_BLANKING (1 << 7) > /* Force 8bpc */ > #define EDID_QUIRK_FORCE_8BPC (1 << 8) >+/* Display is confused by InfoFrames; don't send any */ >+#define EDID_QUIRK_DISABLE_INFOFRAMES (1 << 9) > > struct detailed_mode_closure { > struct drm_connector *connector; >@@ -3402,6 +3404,15 @@ > u8 *edid_ext; > int i; > int start_offset, end_offset; >+ char buf[EDID_DISPLAY_ID_BUF_SIZE]; >+ >+ if (edid_get_quirks(edid) & EDID_QUIRK_DISABLE_INFOFRAMES) { >+ DRM_INFO("Disabling HDMI InfoFrames on display %s " >+ "due to EDID quirk\n", >+ drm_edid_display_id_format(edid->display_id, buf, 1)); >+ return false; >+ } >+ > > edid_ext = drm_find_cea_extension(edid); > if (!edid_ext)
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