| 2021-06-25 01:37:19 |
AceLan Kao |
bug |
|
|
added bug |
| 2021-06-25 01:39:32 |
AceLan Kao |
nominated for series |
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Ubuntu Hirsute |
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| 2021-06-25 01:39:32 |
AceLan Kao |
bug task added |
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linux (Ubuntu Hirsute) |
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| 2021-06-25 01:39:32 |
AceLan Kao |
nominated for series |
|
Ubuntu Groovy |
|
| 2021-06-25 01:39:32 |
AceLan Kao |
bug task added |
|
linux (Ubuntu Groovy) |
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| 2021-06-25 01:39:32 |
AceLan Kao |
nominated for series |
|
Ubuntu Focal |
|
| 2021-06-25 01:39:32 |
AceLan Kao |
bug task added |
|
linux (Ubuntu Focal) |
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| 2021-06-25 01:39:45 |
AceLan Kao |
bug task added |
|
linux-oem-5.10 (Ubuntu) |
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| 2021-06-25 01:39:53 |
AceLan Kao |
linux (Ubuntu Focal): status |
New |
In Progress |
|
| 2021-06-25 01:39:56 |
AceLan Kao |
linux (Ubuntu Groovy): status |
New |
In Progress |
|
| 2021-06-25 01:40:01 |
AceLan Kao |
linux (Ubuntu Hirsute): status |
New |
In Progress |
|
| 2021-06-25 01:40:05 |
AceLan Kao |
linux-oem-5.10 (Ubuntu Focal): status |
New |
In Progress |
|
| 2021-06-25 01:40:10 |
AceLan Kao |
linux (Ubuntu): status |
New |
Invalid |
|
| 2021-06-25 01:40:13 |
AceLan Kao |
linux-oem-5.10 (Ubuntu): status |
New |
Invalid |
|
| 2021-06-25 01:40:16 |
AceLan Kao |
bug task deleted |
linux-oem-5.10 (Ubuntu Groovy) |
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|
| 2021-06-25 01:40:23 |
AceLan Kao |
bug task deleted |
linux-oem-5.10 (Ubuntu Hirsute) |
|
|
| 2021-06-25 01:40:37 |
AceLan Kao |
linux (Ubuntu Focal): assignee |
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AceLan Kao (acelankao) |
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| 2021-06-25 01:40:39 |
AceLan Kao |
linux (Ubuntu Groovy): assignee |
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AceLan Kao (acelankao) |
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| 2021-06-25 01:40:41 |
AceLan Kao |
linux (Ubuntu Hirsute): assignee |
|
AceLan Kao (acelankao) |
|
| 2021-06-25 01:40:44 |
AceLan Kao |
linux-oem-5.10 (Ubuntu Focal): assignee |
|
AceLan Kao (acelankao) |
|
| 2021-06-25 01:45:55 |
AceLan Kao |
description |
[Impact]
[Fix]
[Test]
{Where problems could occur] |
[Impact]
Dell XPS 15 9510(TGL) uses DPCD to control backlight, and need to add this panel to edid_quirk.
kernel: [ 1.719773] i915 0000:00:02.0: [drm] Panel advertises DPCD backlight support, but VBT disagrees. If your backlight controls don't work try booting with i915.enable_dpcd_backlight=1. If your machine needs this, please file a _new_ bug report on drm/i915, see https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs for details.
Kernel 5.13 or newer use new way to handle DPCD backlight, and do not need to this to the quirk.
[Fix]
Adding the panel's MFG to edid_quirk makes system switch to use DPCD to control backlight.
[Test]
Verified on Dell XPS 9510(TGL)
[Where problems could occur]
The quirk is for a dedicate panel, and won't affect other platforms. |
|
| 2021-06-25 01:49:22 |
AceLan Kao |
description |
[Impact]
Dell XPS 15 9510(TGL) uses DPCD to control backlight, and need to add this panel to edid_quirk.
kernel: [ 1.719773] i915 0000:00:02.0: [drm] Panel advertises DPCD backlight support, but VBT disagrees. If your backlight controls don't work try booting with i915.enable_dpcd_backlight=1. If your machine needs this, please file a _new_ bug report on drm/i915, see https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs for details.
Kernel 5.13 or newer use new way to handle DPCD backlight, and do not need to this to the quirk.
[Fix]
Adding the panel's MFG to edid_quirk makes system switch to use DPCD to control backlight.
[Test]
Verified on Dell XPS 9510(TGL)
[Where problems could occur]
The quirk is for a dedicate panel, and won't affect other platforms. |
[Impact]
Dell XPS 15 9510(TGL) uses DPCD to control backlight, and need to add this panel to edid_quirk.
kernel: [ 1.719773] i915 0000:00:02.0: [drm] Panel advertises DPCD backlight support, but VBT disagrees. If your backlight controls don't work try booting with i915.enable_dpcd_backlight=1. If your machine needs this, please file a _new_ bug report on drm/i915, see https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs for details.
Kernel 5.12+ support the backlight via:
commit: <4a8d79901d5b> ("drm/i915/dp: Enable Intel's HDR backlight interface (only SDR for now)"), and doesn't need this quirk.
[Fix]
Adding the panel's MFG to edid_quirk makes system switch to use DPCD to control backlight.
[Test]
Verified on Dell XPS 9510(TGL)
[Where problems could occur]
The quirk is for a dedicate panel, and won't affect other platforms. |
|
| 2021-06-25 01:49:46 |
AceLan Kao |
bug |
|
|
added subscriber Canonical Hardware Enablement |
| 2021-06-25 01:49:52 |
AceLan Kao |
tags |
|
oem-priority originate-from-1933030 somerville |
|
| 2021-06-25 07:18:45 |
Timo Aaltonen |
linux-oem-5.10 (Ubuntu Focal): status |
In Progress |
Fix Committed |
|
| 2021-06-25 18:39:42 |
Ubuntu Kernel Bot |
tags |
oem-priority originate-from-1933030 somerville |
oem-priority originate-from-1933030 somerville verification-needed-focal |
|
| 2021-06-28 01:40:52 |
AceLan Kao |
tags |
oem-priority originate-from-1933030 somerville verification-needed-focal |
oem-priority originate-from-1933030 somerville verification-done-focal |
|
| 2021-07-20 16:26:50 |
Launchpad Janitor |
linux-oem-5.10 (Ubuntu Focal): status |
Fix Committed |
Fix Released |
|
| 2021-07-20 16:26:50 |
Launchpad Janitor |
cve linked |
|
2021-33909 |
|
| 2021-08-06 21:17:09 |
Kelsey Steele |
linux (Ubuntu Focal): status |
In Progress |
Fix Committed |
|
| 2021-08-06 21:17:12 |
Kelsey Steele |
linux (Ubuntu Hirsute): status |
In Progress |
Fix Committed |
|
| 2021-08-06 21:17:15 |
Kelsey Steele |
linux (Ubuntu Groovy): status |
In Progress |
Invalid |
|
| 2021-08-06 21:17:40 |
Kelsey Steele |
linux (Ubuntu Groovy): status |
Invalid |
Won't Fix |
|
| 2021-08-17 14:42:24 |
Ubuntu Kernel Bot |
tags |
oem-priority originate-from-1933030 somerville verification-done-focal |
oem-priority originate-from-1933030 somerville verification-done-focal verification-needed-hirsute |
|
| 2021-09-01 08:46:05 |
AceLan Kao |
tags |
oem-priority originate-from-1933030 somerville verification-done-focal verification-needed-hirsute |
oem-priority originate-from-1933030 somerville verification-done-focal verification-done-hirsute |
|
| 2021-09-07 13:48:28 |
Launchpad Janitor |
linux (Ubuntu Focal): status |
Fix Committed |
Fix Released |
|
| 2021-09-07 13:48:28 |
Launchpad Janitor |
cve linked |
|
2021-3653 |
|
| 2021-09-07 13:48:28 |
Launchpad Janitor |
cve linked |
|
2021-3656 |
|
| 2021-09-07 13:53:28 |
Launchpad Janitor |
linux (Ubuntu Hirsute): status |
Fix Committed |
Fix Released |
|
| 2021-09-07 13:53:28 |
Launchpad Janitor |
cve linked |
|
2020-26541 |
|
| 2022-09-02 13:48:22 |
Timo Aaltonen |
hwe-next: status |
New |
Fix Committed |
|
| 2022-09-02 13:48:37 |
Timo Aaltonen |
hwe-next: status |
Fix Committed |
Fix Released |
|
