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 <timo.aalto...@canonical.com> Tue, 08 Sep 2020
11:40:14 +0300
** Changed in: linux-oem-5.6 (Ubuntu Focal)
Status: Fix Committed => Fix Released
** CVE added: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2020-12888
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https://bugs.launchpad.net/bugs/1893609
Title:
SRU: Fix system hang when stress S3 on radeon with TTM
Status in HWE Next:
New
Status in linux-oem-5.6 package in Ubuntu:
New
Status in linux-oem-5.6 source package in Focal:
Fix Released
Bug description:
SRU Justification:
[Impact]
System hang when stress S3 more than 90 times.
[Fix]
Upstream kernel is good, after bisecting, bad commit is a Ubuntu sauce
patch: "vfio -- release device lock before userspace requests"
5.8 kernel got this fix.
5.4 kernel got this commit by stable update LP:#1888560
[Test Case]
Verified for 500 times of S3, system runs good.
[Regression Potential]
Low
uptream fix for specific commit, verified with postive result.
==================================================
[Summary]
System got hang during executing the S3-30-cycle test case.
[Steps to reproduce]
$ sudo checkbox-support-fwts_test -l /home/u/suspend_30_cycles -f none -s s3
--s3-device-check --s3-device-check-delay=60 --s3-sleep-delay=60
--s3-multiple=30
[Expected result]
The test script should be finished smoothly.
[Actual result]
System got hang at the 7th or 8th S3 resumed back.
[Failure rate]
100%
[Additional information]
CPU: Intel(R) Core(TM) i5-10600 CPU @ 3.30GHz (12x)
GPU: 00:02.0 Display controller [0380]: Intel Corporation Device [8086:9bc8]
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc.
[AMD/ATI] Oland [Radeon HD 8570 / R7 240/340 OEM] [1002:6611] (rev 87)
kernel-version: 5.6.0-1020-oem
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