There are 4 HDMI/Displayport audio output listed in sound setting without attach any HDMI/DP monitor

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1827967

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-bionic' to 'verification-done-bionic'. If the problem still exists, change the tag 'verification-needed-bionic' to 'verification-failed-bionic'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-disco' to 'verification-done-disco'. If the problem still exists, change the tag 'verification-needed-disco' to 'verification-failed-disco'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-cosmic' to 'verification-done-cosmic'. If the problem still exists, change the tag 'verification-needed-cosmic' to 'verification-failed-cosmic'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

This bug was fixed in the package linux - 5.0.0-16.17

---------------
linux (5.0.0-16.17) disco; urgency=medium

  * linux: 5.0.0-16.17 -proposed tracker (LP: #1829173)

  * shiftfs: lock security sensitive superblock flags (LP: #1827122)
    - SAUCE: shiftfs: lock down certain superblock flags

  * Please package libbpf (which is done out of the kernel src) in Debian [for
    19.10] (LP: #1826410)
    - SAUCE: tools -- fix add ability to disable libbfd

  * Disco update: 5.0.8 upstream stable release (LP: #1828415)
    - drm/i915/gvt: do not let pin count of shadow mm go negative
    - kbuild: pkg: use -f $(srctree)/Makefile to recurse to top Makefile
    - netfilter: nft_compat: use .release_ops and remove list of extension
    - netfilter: nf_tables: use-after-free in dynamic operations
    - netfilter: nf_tables: add missing ->release_ops() in error path of newrule()
    - hv_netvsc: Fix unwanted wakeup after tx_disable
    - ibmvnic: Fix completion structure initialization
    - ip6_tunnel: Match to ARPHRD_TUNNEL6 for dev type
    - ipv6: Fix dangling pointer when ipv6 fragment
    - ipv6: sit: reset ip header pointer in ipip6_rcv
    - kcm: switch order of device registration to fix a crash
    - net: ethtool: not call vzalloc for zero sized memory request
    - net-gro: Fix GRO flush when receiving a GSO packet.
    - net/mlx5: Decrease default mr cache size
    - netns: provide pure entropy for net_hash_mix()
    - net: rds: force to destroy connection if t_sock is NULL in
      rds_tcp_kill_sock().
    - net/sched: act_sample: fix divide by zero in the traffic path
    - net/sched: fix ->get helper of the matchall cls
    - qmi_wwan: add Olicard 600
    - r8169: disable ASPM again
    - sctp: initialize _pad of sockaddr_in before copying to user memory
    - tcp: Ensure DCTCP reacts to losses
    - tcp: fix a potential NULL pointer dereference in tcp_sk_exit
    - vrf: check accept_source_route on the original netdevice
    - net/mlx5e: Fix error handling when refreshing TIRs
    - net/mlx5e: Add a lock on tir list
    - nfp: validate the return code from dev_queue_xmit()
    - nfp: disable netpoll on representors
    - bnxt_en: Improve RX consumer index validity check.
    - bnxt_en: Reset device on RX buffer errors.
    - net: ip_gre: fix possible use-after-free in erspan_rcv
    - net: ip6_gre: fix possible use-after-free in ip6erspan_rcv
    - net: bridge: always clear mcast matching struct on reports and leaves
    - net: thunderx: fix NULL pointer dereference in nicvf_open/nicvf_stop
    - net: vrf: Fix ping failed when vrf mtu is set to 0
    - net: core: netif_receive_skb_list: unlist skb before passing to pt->func
    - r8169: disable default rx interrupt coalescing on RTL8168
    - net: mlx5: Add a missing check on idr_find, free buf
    - net/mlx5e: Update xoff formula
    - net/mlx5e: Update xon formula
    - kbuild: clang: choose GCC_TOOLCHAIN_DIR not on LD
    - lib/string.c: implement a basic bcmp
    - Revert "clk: meson: clean-up clock registration"
    - tty: mark Siemens R3964 line discipline as BROKEN
    - [Config]: remove CONFIG_R3964
    - [Config]: add CONFIG_LDISC_AUTOLOAD=y
    - tty: ldisc: add sysctl to p...

This bug was fixed in the package linux - 4.15.0-51.55

---------------
linux (4.15.0-51.55) bionic; urgency=medium

  * linux: 4.15.0-51.55 -proposed tracker (LP: #1829219)

  * disable a.out support (LP: #1818552)
    - [Config] Disable a.out support

  * [UBUNTU] qdio: clear intparm during shutdown (LP: #1828394)
    - s390/qdio: clear intparm during shutdown

  * ftrace in ubuntu_kernel_selftests hang with Cosmic kernel (LP: #1826385)
    - kprobes/x86: Fix instruction patching corruption when copying more than one
      RIP-relative instruction

  * touchpad not working on lenovo yoga 530 (LP: #1787775)
    - Revert "UBUNTU: SAUCE: i2c:amd Depends on ACPI"
    - Revert "UBUNTU: SAUCE: i2c:amd move out pointer in union i2c_event_base"
    - Revert "UBUNTU: SAUCE: i2c:amd I2C Driver based on PCI Interface for
      upcoming platform"
    - i2c: add helpers to ease DMA handling
    - i2c: add a message flag for DMA safe buffers
    - i2c: add extra check to safe DMA buffer helper
    - i2c: Add drivers for the AMD PCIe MP2 I2C controller
    - [Config] Update config for AMD MP2 I2C driver
    - [Config] Update I2C_AMD_MP2 annotations

  * tm-unavailable in powerpc/tm failed on Bionic Power9 (LP: #1813129)
    - selftests/powerpc: Check for pthread errors in tm-unavailable
    - selftests/powerpc: Skip tm-unavailable if TM is not enabled

  * cp_abort in powerpc/context_switch from ubunut_kernel_selftests failed on
    Bionic P9 (LP: #1813134)
    - selftests/powerpc: Remove redundant cp_abort test

  * bionic/linux: completely remove snapdragon files from sources (LP: #1827880)
    - [Packaging] remove snapdragon dead files
    - [Config] update configs after snapdragon removal

  * The noise keeps occurring when Headset is plugged in on a Dell machine
    (LP: #1827972)
    - ALSA: hda/realtek - Fixed Dell AIO speaker noise

  * Geneve tunnels don't work when ipv6 is disabled (LP: #1794232)
    - geneve: correctly handle ipv6.disable module parameter

  * There are 4 HDMI/Displayport audio output listed in sound setting without
    attach any HDMI/DP monitor (LP: #1827967)
    - ALSA: hda/hdmi - Read the pin sense from register when repolling
    - ALSA: hda/hdmi - Consider eld_valid when reporting jack event

  * Headphone jack switch sense is inverted: plugging in headphones disables
    headphone output (LP: #1824259)
    - ASoC: rt5645: Headphone Jack sense inverts on the LattePanda board

  * CTAUTO:DevOps:860.50:devops4fp1:Error occurred during LINUX Dmesg error
    Checking for all LINUX clients for devops4p10 (LP: #1766201)
    - SAUCE: integrity: downgrade error to warning

  * Screen freeze after resume from S3 when HDMI monitor plugged on Dell
    Precision 7740 (LP: #1825958)
    - PCI: Restore resized BAR state on resume

  * potential memory corruption on arm64 on dev release (LP: #1827437)
    - driver core: Postpone DMA tear-down until after devres release

  * powerpc/pmu/ebb test in ubuntu_kernel_selftest failed with "error while
    loading shared libraries" on Bionic/Cosmic PowerPC (LP: #1812805)
    - selftests/powerpc/pmu: Link ebb tests with -no-pie

  * unnecessary request_queue freeze (LP: #1815733)
    - block: av...

This bug was fixed in the package linux - 4.18.0-21.22

---------------
linux (4.18.0-21.22) cosmic; urgency=medium

  * linux: 4.18.0-21.22 -proposed tracker (LP: #1829186)

  * disable a.out support (LP: #1818552)
    - [Config] Turn off a.out support

  * ftrace in ubuntu_kernel_selftests hang with Cosmic kernel (LP: #1826385)
    - kprobes/x86: Fix instruction patching corruption when copying more than one
      RIP-relative instruction

  * touchpad not working on lenovo yoga 530 (LP: #1787775)
    - Revert "UBUNTU: SAUCE: i2c:amd Depends on ACPI"
    - Revert "UBUNTU: SAUCE: i2c:amd move out pointer in union i2c_event_base"
    - Revert "UBUNTU: SAUCE: i2c:amd I2C Driver based on PCI Interface for
      upcoming platform"
    - i2c: add extra check to safe DMA buffer helper
    - i2c: Add drivers for the AMD PCIe MP2 I2C controller
    - [Config] Update config for AMD MP2 I2C driver
    - [Config] Update I2C_AMD_MP2 annotations

  * Geneve tunnels don't work when ipv6 is disabled (LP: #1794232)
    - geneve: correctly handle ipv6.disable module parameter

  * There are 4 HDMI/Displayport audio output listed in sound setting without
    attach any HDMI/DP monitor (LP: #1827967)
    - ALSA: hda/hdmi - Read the pin sense from register when repolling
    - ALSA: hda/hdmi - Consider eld_valid when reporting jack event

  * Headphone jack switch sense is inverted: plugging in headphones disables
    headphone output (LP: #1824259)
    - ASoC: rt5645: Headphone Jack sense inverts on the LattePanda board

  * CTAUTO:DevOps:860.50:devops4fp1:Error occurred during LINUX Dmesg error
    Checking for all LINUX clients for devops4p10 (LP: #1766201)
    - SAUCE: integrity: downgrade error to warning

  * potential memory corruption on arm64 on dev release (LP: #1827437)
    - driver core: Postpone DMA tear-down until after devres release

  * powerpc/pmu/ebb test in ubuntu_kernel_selftest failed with "error while
    loading shared libraries" on Bionic/Cosmic PowerPC (LP: #1812805)
    - selftests/powerpc/pmu: Link ebb tests with -no-pie

  * unnecessary request_queue freeze (LP: #1815733)
    - block: avoid setting nr_requests to current value
    - block: avoid setting none scheduler if it's already none

  * Kprobe event string type argument failed in ftrace from
    ubuntu_kernel_selftests on B/C i386 (LP: #1825780)
    - selftests/ftrace: Fix kprobe string testcase to not probe notrace function

  * False positive test result in run_netsocktests from net in
    ubuntu_kernel_selftest (LP: #1825777)
    - selftests/net: correct the return value for run_netsocktests

 -- Stefan Bader <email address hidden> Wed, 15 May 2019 13:18:36 +0200

This bug was fixed in the package linux - 5.0.0-16.17

---------------
linux (5.0.0-16.17) disco; urgency=medium

  * linux: 5.0.0-16.17 -proposed tracker (LP: #1829173)

  * shiftfs: lock security sensitive superblock flags (LP: #1827122)
    - SAUCE: shiftfs: lock down certain superblock flags

  * Please package libbpf (which is done out of the kernel src) in Debian [for
    19.10] (LP: #1826410)
    - SAUCE: tools -- fix add ability to disable libbfd

  * Disco update: 5.0.8 upstream stable release (LP: #1828415)
    - drm/i915/gvt: do not let pin count of shadow mm go negative
    - kbuild: pkg: use -f $(srctree)/Makefile to recurse to top Makefile
    - netfilter: nft_compat: use .release_ops and remove list of extension
    - netfilter: nf_tables: use-after-free in dynamic operations
    - netfilter: nf_tables: add missing ->release_ops() in error path of newrule()
    - hv_netvsc: Fix unwanted wakeup after tx_disable
    - ibmvnic: Fix completion structure initialization
    - ip6_tunnel: Match to ARPHRD_TUNNEL6 for dev type
    - ipv6: Fix dangling pointer when ipv6 fragment
    - ipv6: sit: reset ip header pointer in ipip6_rcv
    - kcm: switch order of device registration to fix a crash
    - net: ethtool: not call vzalloc for zero sized memory request
    - net-gro: Fix GRO flush when receiving a GSO packet.
    - net/mlx5: Decrease default mr cache size
    - netns: provide pure entropy for net_hash_mix()
    - net: rds: force to destroy connection if t_sock is NULL in
      rds_tcp_kill_sock().
    - net/sched: act_sample: fix divide by zero in the traffic path
    - net/sched: fix ->get helper of the matchall cls
    - qmi_wwan: add Olicard 600
    - r8169: disable ASPM again
    - sctp: initialize _pad of sockaddr_in before copying to user memory
    - tcp: Ensure DCTCP reacts to losses
    - tcp: fix a potential NULL pointer dereference in tcp_sk_exit
    - vrf: check accept_source_route on the original netdevice
    - net/mlx5e: Fix error handling when refreshing TIRs
    - net/mlx5e: Add a lock on tir list
    - nfp: validate the return code from dev_queue_xmit()
    - nfp: disable netpoll on representors
    - bnxt_en: Improve RX consumer index validity check.
    - bnxt_en: Reset device on RX buffer errors.
    - net: ip_gre: fix possible use-after-free in erspan_rcv
    - net: ip6_gre: fix possible use-after-free in ip6erspan_rcv
    - net: bridge: always clear mcast matching struct on reports and leaves
    - net: thunderx: fix NULL pointer dereference in nicvf_open/nicvf_stop
    - net: vrf: Fix ping failed when vrf mtu is set to 0
    - net: core: netif_receive_skb_list: unlist skb before passing to pt->func
    - r8169: disable default rx interrupt coalescing on RTL8168
    - net: mlx5: Add a missing check on idr_find, free buf
    - net/mlx5e: Update xoff formula
    - net/mlx5e: Update xon formula
    - kbuild: clang: choose GCC_TOOLCHAIN_DIR not on LD
    - lib/string.c: implement a basic bcmp
    - Revert "clk: meson: clean-up clock registration"
    - tty: mark Siemens R3964 line discipline as BROKEN
    - [Config]: remove CONFIG_R3964
    - [Config]: add CONFIG_LDISC_AUTOLOAD=y
    - tty: ldisc: add sysctl to p...

The submitted fix causes many users to have no HDMI sound at all, because they are not able to select their sound device. See the corresponding bug report: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1834771

Rolando,

Please refer to https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1834771/comments/32

Hi Hui Wang,

just wanted to remind you that this patch (meant for better usability) broke audio completely for many users out there. I'd really like to see any progress in the corresponding bug report: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1834771

Meanwhile I came across many threads in my local language ubuntu community forum that deal with exact this problem. Having no sound at all is a mayor deal breaker for many new ubuntu users that switched from Windows 7. So please, if a real fix needs more time, revert this patch in the first place! Having some superfluous outputs for selection is better than having no audio at all.

Thank you very much for your time!

@richy80,

Please read this thread: https://mailman.alsa-project.org/pipermail/alsa-devel/2019-November/158336.html

It is a problem in the radeon or nouveau driver, and will be fixed by audio-component support in the radeon and nouveau driver.

And audio maintainer wants some debug info, because I don't have machines which can reproduce your problem, could you please provide or reply that email.

thx.

Ok, I'm just a user and don't have access to that mailing list but what I CAN say, is, that my affected system doesn't run radeon or nouveau driver but amdgpu.

Takashi Iwai wrote in November 2019 'amdgpu driver already got the audio-component binding recently, so this problem shouldn't be triggered'
(https://mailman.alsa-project.org/pipermail/alsa-devel/2019-November/158350.html)

I've no Idea what he exactly means with that because amdgpu driver with recent ubuntu kernels from mid of January 2020 is definitely affected by this issue.

In the other bugreport two users already tested your kernels and provided some dmesg logs. So I think they would be happy to help you with further investigations. I for my self didn't install any testing kernels and also have no clue how to 'unload / reload the HD-audio driver' as Takashi Iwai mentioned here: https://mailman.alsa-project.org/pipermail/alsa-devel/2019-November/158707.html

So I think you should better place your call for help over there: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1834771

Thank you very much for your attention and sorry I couldn't be more helpful ...

correction: I don't have any testing kernels installed NOW. In December 2019 I tried your kernels and failed to uninstall them correctly. In the end I had to go back to a system backup. If you tell me how to unload/reload the HD-audio driver and what to do afterwards I'd be willing to help. But anyway I think this discussion should better take place there: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1834771

OK, just added a commment in #1834771