This bug was fixed in the package linux-oem-5.10 - 5.10.0-1025.26
---------------
linux-oem-5.10 (5.10.0-1025.26) focal; urgency=medium
* focal/linux-oem-5.10: 5.10.0-1025.26 -proposed tracker (LP:
#1926155)
* Packaging resync (LP: #1786013)
- update dkms package versions
* CirrusLogic: Cracking noises appears in built-in speaker when output volume
is set >80% (LP: #1924997)
- SAUCE: ALSA: hda/cirrus: Use CS8409 Equalizer to fix abnormal sounds on
Bullseye
-- Timo Aaltonen <timo.aalto...@canonical.com> Mon, 26 Apr 2021
16:18:11 +0300
** Changed in: linux-oem-5.10 (Ubuntu Focal)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1922768
Title:
Update - Fix no screen show on display after S3 on CML-R
Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-5.10 package in Ubuntu:
Invalid
Status in linux source package in Focal:
New
Status in linux-oem-5.10 source package in Focal:
Fix Released
Status in linux source package in Hirsute:
Fix Released
Status in linux-oem-5.10 source package in Hirsute:
Invalid
Bug description:
[Impact]
On CML-R, after S3, No screen show on all three connector(3*DP).
[Fix]
Here's v4 patch and has been landed on drm-tip,
https://patchwork.freedesktop.org/patch/msgid/20210217180016.1937401-1-ly...@redhat.com,
so revert the old and resend the v4 patch.
For Legacy S3 suspend/resume GEN9 BC needs to enable and setup TGP PCH.
[Test Case]
1. Connected the monitor on one of 3*DP on CML-R.
2. Suspend&resume the machine.
3. Check the monitor can output something.
[Where problems could occur]
Just Enable the hpd detection in IRQ installer and during suspend&resume.
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