Ubuntu

intel ac 9462 doesn't work on LTS 18.04.3

Asked by Lilian Tao

[ 2.631402] iwlwifi 0000:00:14.3: loaded firmware version 43.95eb4e97.0 op_mode iwlmvm
[ 2.643718] iwlwifi 0000:00:14.3: Detected Intel(R) Dual Band Wireless AC 9462, REV=0x354
[ 7.819312] iwlwifi 0000:00:14.3: Failed to load firmware chunk!
[ 7.819315] iwlwifi 0000:00:14.3: iwlwifi transaction failed, dumping registers
[ 7.819316] iwlwifi 0000:00:14.3: iwlwifi device config registers:
[ 7.819346] iwlwifi 0000:00:14.3: 00000000: 02f08086 00100406 02800000 00800010 b7118004 00000000 00000000 00000000
[ 7.819347] iwlwifi 0000:00:14.3: 00000020: 00000000 00000000 00000000 02a48086 00000000 000000c8 00000000 000001ff
[ 7.819348] iwlwifi 0000:00:14.3: iwlwifi device memory mapped registers:
[ 7.819404] iwlwifi 0000:00:14.3: 00000000: 18489004 00000040 00000000 00000000 00000000 00000000 00000000 00000000
[ 7.819405] iwlwifi 0000:00:14.3: 00000020: 00000011 0c040005 00000351 d55555d5 d55555d5 d55555d5 80008040 001f0040
[ 7.819424] iwlwifi 0000:00:14.3: Could not load the [0] uCode section
[ 7.819428] iwlwifi 0000:00:14.3: Failed to start INIT ucode: -110
[ 7.819430] iwlwifi 0000:00:14.3: Collecting data: trigger 15 fired.
[ 8.038689] iwlwifi 0000:00:14.3: Failing on timeout while stopping DMA channel 8 [0x0bad1122]
[ 8.051422] iwlwifi 0000:00:14.3: Failed to run INIT ucode: -110

available firmwares under /lib/firware
-rw-r--r-- 1 root root 2632620 4月 24 2018 iwlwifi-9000-pu-b0-jf-b0-33.ucode
-rw-r--r-- 1 root root 2677620 9月 22 01:30 iwlwifi-9000-pu-b0-jf-b0-34.ucode
-rw-r--r-- 1 root root 2520568 7月 12 23:54 iwlwifi-9000-pu-b0-jf-b0-38.ucode
-rw-r--r-- 1 root root 2620464 7月 12 21:42 iwlwifi-9000-pu-b0-jf-b0-41.ucode
-rw-r--r-- 1 root root 2543536 7月 12 21:42 iwlwifi-9000-pu-b0-jf-b0-43.ucode
-rw-r--r-- 1 root root 9725191 9月 22 02:10 iwlwifi-9000-pu-b0-jf-b0-46.ucode

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Revision history for this message
Lilian Tao (nintao) said : 		#1

in settings it said:
no Wi-Fi adapter found.

on the same computer there is a windows 10 system and it can find the same AC 9462 properly.

Revision history for this message
Lilian Tao (nintao) said : 		#2

First switched the kernel based on the ticket
https://bugs.launchpad.net/ubuntu/+source/linux-oem-osp1/+bug/1835879
but then the sound stop working, so gave up this solution (it may work for a different laptop)

then try
https://bugs.launchpad.net/ubuntu/+bug/1835858
and used the .deb from the private repo of the dev solved this issue.

Worked.
Until upstream.

Revision history for this message
Lilian Tao (nintao) said : 		#3

for those who just want a solution directly without going though the posts:

wget https://launchpad.net/~vicamo/+archive/ubuntu/backport-iwlwifi-dkms/+files/backport-iwlwifi-dkms_8042-0ubuntu1_all.deb

sudo apt install ./backport-iwlwifi-dkms_8042-0ubuntu1_all.deb

Revision history for this message
Kim Nguyen (kimyvgy) said : 		#4

I installed your .deb file, the issue: "No Wi-Fi adapter found" still shown. It does not work on my laptop (Dell Vostro 5490).
After upgrading the kernel to Ubuntu-oem-osp1-5.0.0-1028.32, Wi-Fi is working as well on my laptop. But the sound stops working.