Probably file an upstream bug at intel graphics upstream:
https://gitlab.freedesktop.org/drm/intel/wikis/How-to-file-i915-bugs
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** Attachment added: "success-powerup-dmesg.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1879401/+attachment/5399008/+files/success-powerup-dmesg.txt
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I don't know if it's relevant; it may very well not be, because after
this kernel message (described below) things sometimes succeed, or
sometimes fail.
But I noticed that there's a new feature in drm-tip (but not in mainline
5.8), for HDMI silent stream audio. I turned it on. It seems to work
Sure. pactl list cards output is identical on success and failure:
$ md5sum pactl-list-cards-*
1b3e54a38e363e16115a0428901f71ed pactl-list-cards-fail.txt
1b3e54a38e363e16115a0428901f71ed pactl-list-cards-success.txt
** Attachment added: "pactl-list-cards.txt"
Can you please attach `pactl list cards` when it fails?
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Title:
[XPS 13 7390 2-in-1, Intel Icelake HDMI, Digital Out, HDMI] sound
Now attaching failed dmesg.
** Attachment added: "failed-sound-dmesg.txt"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1879401/+attachment/5394330/+files/failed-sound-dmesg.txt
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Last night I built a kernel from drm-tip. CONFIG_BPFILTER is disabled
because of regressions, otherwise config is the same as used in
https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/current/
I was eventually able to reproduce the problem but it seemed like I need
to reboot in order to do
Hi @kaihengfeng, I'm happy to do that but it'll have to wait a few days
for the 5.8-rc6 rebase. The bpfilter regression in rc5 is blocking for
me.
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Can you please install latest drm-tip kernel:
https://kernel.ubuntu.com/~kernel-ppa/mainline/drm-tip/current/
Then boot with kernel parameter "drm.debug=0xe log_buf_len=16M",
reproduce both good and failed case, and attach dmesg here?
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Ok. The first two attempts did produce some useful error message:
[Jun19 15:55] [drm:intel_dp_get_link_train_fallback_values [i915]] *ERROR* Link
Training Unsuccessful
[ +0.143341] [drm:intel_dp_get_link_train_fallback_values [i915]] *ERROR* Link
Training Unsuccessful
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@kaihengfeng,
Sure. I'm attaching the "dmesg -H" output from a run that worked.
My odds of success lately have been a bit better than "rarely works",
but I still often need a few retries to get it working. A "retry" could
mean unplugging and re-plugging the hub or HDMI cable, or simply
sebastienhouze,
If the issue you are seeing is not the same (i.e. Type-c HUB -> HDMI),
please file a separate bug.
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Title:
[XPS 13
Nathan,
Can you please upload logs when it's working?
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Title:
[XPS 13 7390 2-in-1, Intel Icelake HDMI, Digital Out, HDMI] sound
it's still not working on 5.6.0-1011-oem I always boot on 5.6.0-1008-oem
to have soundcard working.
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Title:
[XPS 13 7390 2-in-1,
This may not be an ASPM issue after all. I just booted 5.6.0-1011-oem a
few times with various settings, and had a few failures with
pcie_aspm=off or pcie_aspm.policy=performance.
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Hi, I have a Dell XPS 13 7390 and having the very same issue, sound is
not working when I upgrade to 5.6.0-1010-oem but works on
5.6.0-1008-oem. Sound card is HDA Intel PCH and chipset Realtek ALC3271.
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I have another system that I connect to this TV. It's built around an
old Haswell, Z87-chipset desktop motherboard. I installed Linux on it
today, to test this, and so far it seems to work fine.
I noticed that the Haswell doesn't even support ASPM; the BIOS either
doesn't implement the required
*meant to say, whether receiver is on or off.
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Title:
[XPS 13 7390 2-in-1, Intel Icelake HDMI, Digital Out, HDMI] sound
rarely
By the way, the TV I'm connecting to is an LG C9 running firmware
04.71.25 (current as of this writing) which is further connected to a
Sony STR-DH750 via HDMI ARC. I connect the laptop via the TV, not the
receiver, and problem persists whether TV is on or off.
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Tested version_signature Ubuntu 5.3.0-53.47-generic 5.3.18.
Unfortunately the problem persists.
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Title:
[XPS 13 7390 2-in-1, Intel
Can you please test the 5.3 kernel, which is used in 19.10?
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Title:
[XPS 13 7390 2-in-1, Intel Icelake HDMI, Digital Out, HDMI]
I tested the PPA. It doesn't help. If anything, it might make things a
bit worse.
Also, I can now confirm that I spoke a bit too soon in comment #19 when
I said "linux-image-5.4.0-32-generic after removing kernel command line
pcie_aspm.policy=powersupersave --> seems better so far". That
I'm having trouble coming up with a pin to get the PPA to install with
apt update && apt upgrade. Why doesn't this work?
nbryant@atlantis:/etc/apt/preferences.d$ cat fix
Package: *
Pin: release o=LP-PPA-kaihengfeng-fix-lp1869819
Pin-Priority: 999
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Sorry, I got it! Priority needs to be 1000 or more for a "downgrade"
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Title:
[XPS 13 7390 2-in-1, Intel Icelake HDMI, Digital Out,
Can you please test this PPA:
https://launchpad.net/~kaihengfeng/+archive/ubuntu/fix-lp1869819
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Title:
[XPS 13 7390 2-in-1, Intel
Tested some mainline kernels, no luck. None of the following seem to be
any better:
* 5.6.13
* 5.7-rc6
* drm-tip 202005190212
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I did some more testing today:
* linux-image-5.4.0-31-generic --> not any better
* linux-image-5.4.0-32-generic --> not any better
* linux-image-5.6.0-1010-oem after removing kernel command line
pcie_aspm.policy=powersupersave --> not any better
* linux-image-5.4.0-32-generic after removing
apport information
** Tags added: apport-collected
** Description changed:
I have an Ice Lake laptop (Dell 7390 2-in-one) which I am connecting to
a TV over HDMI via a Novoo USB-C multiport adapter. This is not a
Thunderbolt device, it is just USB-C.
It seemed like things used to
** Package changed: alsa-driver (Ubuntu) => linux (Ubuntu)
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Title:
[XPS 13 7390 2-in-1, Intel Icelake HDMI, Digital Out, HDMI]
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