Comet Lake PCH-H RAID not support on Ubuntu20.04

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 1892288

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.

Intel has proposed the patch in upstream[1], a testing build of linux-oem 5.6 is availbile on ppa[2].

[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=5e125d13371b3049d238a4bf5f2108bfbfe8a900
[2] https://launchpad.net/~kobako/+archive/ubuntu/ppa-lp1888311

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-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

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!

A quick update here. After running the test on the following build, the symptom still can be observed. If test config configured as RAID mode, the system can not find any disk. Moreover, after rolling back the change (RAID -> AHCI), the system ran the recovery process instead of booting into the desktop.

# Steps to reproduce:
1. Select "AHCI" mode in BIOS (Boot to BIOS, "Devices" => "Configure SATA as" : AHCI)
2. Boot up the system
3. Reboot the system and then enter the BIOS
4. Change the to "RAID"
5. Save the config and then boot up the system
6. Check if the system can boot to the desktop

# Expected result:
The system can boot to the Desktop

# Actual result:
The system froze during startup

# Build info:
- Kernel version: 5.6.0.1020 (5.6.0-1020.20ubuntu1.lp1888311 ): Failed
- Kernel version: 5.6.0.1021 (focal-amd64-X00-20200821-272.iso): Failed
- Kernel version: 5.6.0.1028 (5e125d13371b3049d238a4bf5f2108bfbfe8a900): Failed

# Test config: P340 (P340-SIT-C1)

you can't just change the status, the patch is still committed to both kernels

In BIOS, Change to RAID/Intel RST and create a volume.
Boot with 5.6.0.1028, the raid device can be found in /dev
#sudo fdisk -l
/dev/mapper/lsw_gdejahcjf_Volume1p1 2048 2000420863 2000418816 953.9G 83 Linu

This bug was fixed in the package linux-oem-5.6 - 5.6.0-1028.28

---------------
linux-oem-5.6 (5.6.0-1028.28) focal; urgency=medium

  * focal/linux-oem-5.6: 5.6.0-1028.28 -proposed tracker (LP: #1894630)

  * Cannot probe sata disk on sata controller behind VMD: ata1.00: failed to
    IDENTIFY (I/O error, err_mask=0x4) (LP: #1894778)
    - SAUCE: PCI: vmd: Add AHCI to fast interrupt list

  * SRU: Fix system hang when stress S3 on radeon with TTM (LP: #1893609)
    - mei: bus: don't clean driver pointer

  * Packaging resync (LP: #1786013)
    - [Packaging] update helper scripts
    - update dkms package versions

  * Introduce the new NVIDIA 450-server and the 450 UDA series (LP: #1887674)
    - [packaging] add signed modules for the 450 nvidia driver

  * CVE-2020-12888
    - vfio/type1: Support faulting PFNMAP vmas
    - vfio-pci: Fault mmaps to enable vma tracking
    - vfio-pci: Invalidate mmaps and block MMIO access on disabled memory

  * Missing id 8086:a0bc for VMD quirk PCI_DEV_FLAGS_ENABLE_ASPM (LP: #1893194)
    - SAUCE: PCI/ASPM: VMD: add ASPM quirk for 8086:a0bc

  * The DP/HDMI audio via USB-C to DP dongle or Dell Zeus adapter can't work
    after suspend (LP: #1893290)
    - ALSA: hda/hdmi: always check pin power status in i915 pin fixup

  * Comet Lake PCH-H RAID not support on Ubuntu20.04 (LP: #1892288)
    - ahci: Add Intel Comet Lake PCH-H PCI ID

  * device doesn't boot with kernel older than v5.7.7 on a usb key: hang at
    efi_tpm_eventlog_init (LP: #1892827)
    - efi/tpm: Verify event log header before parsing

 -- Timo Aaltonen <email address hidden> Tue, 08 Sep 2020 11:40:14 +0300

Hi Jiqi,

We are working to get verification testing completed, would you be able to confirm this issue is resolved in Focal 5.4.0-49.53?

Thanks,
Ian

Koba and I got together to discuss and investigate the issue within this week and last week. It seems to us that there is something wrong with the OEM build because the issue can still be observed on OEM build after upgrading the Kernel to 5.6.0.1029. Details are as follows.

# Stock Ubuntu & 5.6.0.1030-oem
  - Test result: Issue cannot be observed. After configuring as RAID mode, the system can boot into the desktop

# OEM build (amd64-X00-20200821-272) & 5.6.0.1030-oem
  - Test result: Issue still can be observed. After configuring as RAID mode, the system cannot boot into the desktop.

This bug was fixed in the package linux - 5.4.0-51.56

---------------
linux (5.4.0-51.56) focal; urgency=medium

  * Packaging resync (LP: #1786013)
    - update dkms package versions

linux (5.4.0-50.55) focal; urgency=medium

  * CVE-2020-16119
    - SAUCE: dccp: avoid double free of ccid on child socket

  * CVE-2020-16120
    - Revert "UBUNTU: SAUCE: overlayfs: ensure mounter privileges when reading
      directories"
    - ovl: pass correct flags for opening real directory
    - ovl: switch to mounter creds in readdir
    - ovl: verify permissions in ovl_path_open()
    - ovl: call secutiry hook in ovl_real_ioctl()
    - ovl: check permission to open real file

linux (5.4.0-49.53) focal; urgency=medium

  * focal/linux: 5.4.0-49.53 -proposed tracker (LP: #1896007)

  * Comet Lake PCH-H RAID not support on Ubuntu20.04 (LP: #1892288)
    - ahci: Add Intel Comet Lake PCH-H PCI ID

  * Novalink (mkvterm command failure) (LP: #1892546)
    - tty: hvcs: Don't NULL tty->driver_data until hvcs_cleanup()

  * Oops and hang when starting LVM snapshots on 5.4.0-47 (LP: #1894780)
    - SAUCE: Revert "mm: memcg/slab: fix memory leak at non-root kmem_cache
      destroy"

  * Intel x710 LOMs do not work on Focal (LP: #1893956)
    - i40e: Fix LED blinking flow for X710T*L devices
    - i40e: enable X710 support

  * Add/Backport EPYC-v3 and EPYC-Rome CPU model (LP: #1887490)
    - kvm: svm: Update svm_xsaves_supported

  * Fix non-working NVMe after S3 (LP: #1895718)
    - SAUCE: PCI: Enable ACS quirk on CML root port

  * Focal update: v5.4.65 upstream stable release (LP: #1895881)
    - ipv4: Silence suspicious RCU usage warning
    - ipv6: Fix sysctl max for fib_multipath_hash_policy
    - netlabel: fix problems with mapping removal
    - net: usb: dm9601: Add USB ID of Keenetic Plus DSL
    - sctp: not disable bh in the whole sctp_get_port_local()
    - taprio: Fix using wrong queues in gate mask
    - tipc: fix shutdown() of connectionless socket
    - net: disable netpoll on fresh napis
    - Linux 5.4.65

  * Focal update: v5.4.64 upstream stable release (LP: #1895880)
    - HID: quirks: Always poll three more Lenovo PixArt mice
    - drm/msm/dpu: Fix scale params in plane validation
    - tty: serial: qcom_geni_serial: Drop __init from qcom_geni_console_setup
    - drm/msm: add shutdown support for display platform_driver
    - hwmon: (applesmc) check status earlier.
    - nvmet: Disable keep-alive timer when kato is cleared to 0h
    - drm/msm: enable vblank during atomic commits
    - habanalabs: validate FW file size
    - habanalabs: check correct vmalloc return code
    - drm/msm/a6xx: fix gmu start on newer firmware
    - ceph: don't allow setlease on cephfs
    - drm/omap: fix incorrect lock state
    - cpuidle: Fixup IRQ state
    - nbd: restore default timeout when setting it to zero
    - s390: don't trace preemption in percpu macros
    - drm/amd/display: Reject overlay plane configurations in multi-display
      scenarios
    - drivers: gpu: amd: Initialize amdgpu_dm_backlight_caps object to 0 in
      amdgpu_dm_update_backlight_caps
    - drm/amd/display: Retry AUX write when fail occurs
    - drm/amd/display: Fix memleak in amdg...

Hi Ian,

I have tested the package linux - 5.4.0-51.56, and it has fixed this issue. Thanks.

Regards,
Jiqi.