What TV? Samsung?
Posts by smp
-
-
So is it some kind of miscommunication between LE and LG TV?
It's a bug/feature of your TV's firmware. Maybe some setting in the service menu would disable PC mode.
On a Samsung TV the PC mode activates only when you change the "Device icon" to "PC".
-
The only change in that driver since kernel 5.10 (LE10) is https://github.com/torvalds/linux…440e5c8dfd02896. So I see no reason to revert other commits. The issue must be somewhere else.
-
Do you think it would be useful if I open a bug in the i915 kernel repoI'd be very surprised if this would get any attention there.
-
Any reason this isn't merged in upstream?
This disables an essential HDMI 2.0 feature. Also, the issue seem to be specific to Gemini Lake. I couldn't reproduce it with Alder Lake/Tiger Lake.
-
HDMI 2.0 on Gemini Lake is finicky. I came up with this kernel hack to make it work without random black screens on a Samsung TV:
Diff
Display Morediff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c index 2fa9ba3..b258e1d 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.c +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c @@ -2549,7 +2549,7 @@ int intel_hdmi_compute_config(struct intel_encoder *encoder, pipe_config->hdmi_scrambling = true; if (pipe_config->port_clock > 340000) { - pipe_config->hdmi_scrambling = true; + pipe_config->hdmi_scrambling = false; pipe_config->hdmi_high_tmds_clock_ratio = true; } }No idea if this would help in your case.
-
is it going to a night and day difference or something minor?
It should make a big difference. I never tested it on Gemini Lake though.
-
111032 – Need to set gt_min_freq_mhz to max value to avoid sync issues on Gemini Lake N5000/J5005
There was supposedly a fix/improvement back in 2019.
-
2024-06-24 09:36:40.162 T:966 info <general>: ffmpeg[0x38936ae0]: Side data:
2024-06-24 09:36:40.162 T:966 info <general>: ffmpeg[0x38936ae0]: DOVI configuration record: version: 1.0, profile: 5, level: 6, rpu flag: 1, el flag: 0, bl flag: 1, compatibility id: 0You are trying to play a Dolby Vision video.
-
If you can compile your own LE image you can try to build it with this patch removed. This will enable async rendering and should improve GUI performance quite a bit.
-
Did you disable "Disable screensaver when playing audio" setting?
-
Is this a bug, or a limitation of driver/software support as noted in the docs?
I don't have an RPi but I think this RPI-specific patch does the bit depth detection and sets the HDMI mode accordingly. No idea why it does not work for AV1 though.
-
When I changed channel it flickers
This was fixed in Kodi 22 "P", so wait for LE13.
-
signal HLG not work in TV LG
Try this build.
-
IMO it's worth trying the new Intel Xe driver.
CONFIG_DRM_XE=m
i915.force_probe=!xxxx xe.force_probe=xxxx (disable i915 and enable Xe driver, xxxx=Intel PCI graphics ID)
I'm running this on TGL and kernel 6.9. No idea if it fixes anything, I don't use audio passthrough.
-
Diff
Display Morediff --git a/drivers/media/dvb-frontends/si2183.c b/drivers/media/dvb-frontends/si2183.c index b9564d4f4a84..2b97c96caa10 100644 --- a/drivers/media/dvb-frontends/si2183.c +++ b/drivers/media/dvb-frontends/si2183.c @@ -1692,8 +1692,7 @@ static struct si_base *match_base(struct i2c_adapter *i2c, u8 adr) return NULL; } -static int si2183_probe(struct i2c_client *client, - const struct i2c_device_id *id) +static int si2183_probe(struct i2c_client *client) { struct si2183_config *config = client->dev.platform_data; struct si2183_dev *dev;^ changes for kernel 6.6
-
It's probably related to AAC audio. See here.
-
flickering deinterlacing
That's BOB deinterlacing. RPi4 can only do BOB when using a hardware decoding. For high quality deinterlacing (BWDIF) switch to software decoding.
Back in pre-LE10 days there was a MMAL (GPU-assisted?) high quality deinterlacing method but I doubt that it would ever be re-implemented.
