[linux-firmware][SRU][B/D/E][PATCH 0/1] Intel Wireless-AC 9560 Bluetooth causes UI freeze

You-Sheng Yang vicamo.yang at canonical.com
Thu Dec 5 09:15:14 UTC 2019

From: You-Sheng Yang <vicamo at gmail.com>

BugLink: https://bugs.launchpad.net/bugs/1855235

Intel Wireless-AC 9560 Bluetooth may fail to suspend under a certain
scenarios and then causes UI freeze.

commit c62c3c26a5e7 (linux-firmware: Update firmware file for Intel
Bluetooth AX201).

[Test Case]
1. Pair some Bluetooth BLE device. Open a terminal and run `dmesg -w` to
make sure Bluetooth is receiving advertisement events and repeatedly

  Bluetooth: hci0: advertising data len corrected

2. Turn off dim display/blank screen on idle in Settings
3. Shorten long idle suspend time to 2 minutes as a quick way to
reproduce this issue by:

  $ gsettings set org.gnome.settings-daemon.plugins.power \
      sleep-inactive-ac-timeout 120

4. Idle wait for 2 minute and let system suspend.
5. Resume after 20 seconds suspend or so.

[Regression Potential]
Low. Only update firmware blob of affected model.

[Other Info]
The upstream commit contains updates to other models, but they do not
seem to be affected by this issue. Only intel/ibt-19-32-1.sfi is
applied in following patches.

Amit K Bag (1):
  linux-firmware: Update firmware file for Intel Bluetooth AX201

 WHENCE                |   4 ++--
 intel/ibt-19-32-1.sfi | Bin 715896 -> 722372 bytes
 2 files changed, 2 insertions(+), 2 deletions(-)


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