DMC here stands for Display Micro-Controller, and the blobs are firmware
for DMC. So that's probably a question for VGA and/or BIOS vendors.
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@Kent
Is there any comment on why this issue only happened on the config from
customer, but not on our configs.
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Title:
system failed to
This should affect all linux-firmware >= 1.157.13 (factory image has
1.157.12~somerville4, xenial-updates has 1.157.22).
The only work-around so far is to remove
/lib/firmware/i915/kbl_dmc_ver1_01.bin (and
/lib/firmware/i915/kbl_dmc_ver1_04.bin if available).
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By the way, with kernel newer than 4.18, at the first time
suspend/resume may succeed, but the second time and on it will always
hang.
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Title:
Filed public issue https://gitlab.freedesktop.org/drm/intel/issues/933.
Since this affects all kernel and linux-firmware versions, removing
kbl_dmc_ver1_*.bin doesn't seem a viable solution that we'll accept
globally. Need further inputs. Pending.
** Bug watch added:
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-
firmware.git/commit/?id=1156e62c5ec45061955a29e1b9299ffda58479d3 this
commit introduced an update (v1.04 vs. v1.01) to the i915 DMC for Kaby
Lake and has been included in linux-firmware/bionic and on. However this
doesn't fix this
This issue can be reproduced only on:
00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics 620
[8086:5917] (rev 07) (prog-if 00 [VGA controller])
Subsystem: Dell UHD Graphics 620 [1028:0817]
Latest v5.5-rc5 mainline kernel + korg HEAD linux-firmware doesn't fix
This commit was first cherry-picked to linux-firmware from upstream in
bug 1637481 as https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source
/linux-
firmware/commit/?h=xenial=f428ce858f2bcd5a5e5c0869db6ac09a1a110d79
for bringing in firmware blobs from yakkety, and was then reverted as
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux-
firmware/commit/?h=xenial=4c85562e738eaf5c8b96ef832954aeb10523f970 is
the first broken commit that may hang the system in the first or second
suspend/resume process when booting with 4.4.0-100-generic kernel, and
linux-firmware
I can reproduce with following steps:
1. do factory recovery (Xenial oem install)
2. upgrade linux-firmware along to 1.157.22
3. completely power off and reboot after 1 minute
4. trigger system suspend
In the beginning CAP lock indicator is blinking, and then keyboard may
have one flash, then
I can reproduce this with clean Xenial oem install with linux-firmware
upgraded from 1.157.12~somerville4 to 1.157.22. However, that
1.157.12~somerville4 is no longer available anywhere but the factory
recovery image, so I can only downgrade to 1.157, but it's still
affected. So I think some
** Also affects: linux-oem-osp1 (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: linux-meta-oem-osp1 (Ubuntu)
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Title:
because there's issue on apport , so I attach sosreport instead here.
** Attachment added: "sosreport-u-Latitude-5590-20200103113343.tar.xz"
https://bugs.launchpad.net/ubuntu/+source/linux-meta-oem-osp1/+bug/1857883/+attachment/5317264/+files/sosreport-u-Latitude-5590-20200103113343.tar.xz
the pre-loaded Xenial OEM image works well.
So, I tried to update the kernel on Xenial OEM, to approach the environment of
Bionic.
The steps are:
1. install latest oem kernel 5.0.0-1030-oem-osp1 , then systemctl suspend and
passed.
2. install latest linux-firmware 1.173.14 , then systemctl
this bug is created by "apport-bug linux-oem-osp1"
** Also affects: oem-priority
Importance: Undecided
Status: New
** Changed in: oem-priority
Assignee: (unassigned) => Alex Tu (alextu)
** Tags added: apport-collected
** Description changed:
steps I done:
- install stock
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