Ubuntu freezing on Lafite

ealdwulf

New member
I had a problem with my laptop (spec below) freezing when running Ubuntu 18.04.3 LTS. The mouse pointer just stopped moving, no error messages, had to power cycle. It would do it a few times a week. I found that someone had a similar issue (https://bugzilla.redhat.com/show_bug.cgi?id=1571330) and solved it by a grub config file:

$cat /etc/default/grub.d/mobile_lpm.cfg
GRUB_CMDLINE_LINUX_DEFAULT="$GRUB_CMDLINE_LINUX_DEFAULT ahci.mobile_lpm_policy=0"

This seems to have solved my issues as well.

Chassis & Display
Lafité Series: Aluminium Chassis: 15.6" Matte Full HD IPS LED (1920 x 1080)
Processor (CPU)
Intel® Core™ i5 Quad Core Processor i5-8265U (1.60GHz, 3.9GHz Turbo)
Memory (RAM)
32GB Corsair 2133MHz SODIMM DDR4 (2 x 16GB)
Graphics Card
INTEL® HD GRAPHICS (CPU Dependant) - 1.7GB Max DDR4 Video RAM - DirectX® 12
1st M.2 SSD Drive
1TB ADATA SX6000 Pro PCIe M.2 2280 (2100 MB/R, 1500 MB/W)
Memory Card Reader
Integrated 6 in 1 Card Reader (SD /Mini SD/ SDHC / SDXC / MMC / RSMMC)
AC Adaptor
1 x 65W AC Adaptor
Power Cable
1 x 1 Metre Cloverleaf UK Power Cable
Battery
Lafité Series 3 Cell Lithium Ion Battery (36WH)
Sound Card
Intel 2 Channel High Definition Audio + MIC/Headphone Jack
Bluetooth & Wireless
GIGABIT LAN & WIRELESS INTEL® AC-9260 M.2 (1.73Gbps, 802.11AC) +BT 5.0
USB/Thunderbolt Options
1 x USB 3.1 PORT (Type C) + 2 x USB 3.0 PORTS + 1 x USB 2.0 PORT
Keyboard Language
15" LAFITÉ SERIES MULTI COLOUR BACKLIT UK KEYBOARD
Operating System
NO OPERATING SYSTEM REQUIRED
Operating System Language
United Kingdom - English Language
Windows Recovery Media
NO RECOVERY MEDIA REQUIRED
Office Software
FREE 30 Day Trial of Microsoft® Office® 365 (Operating System Required)
Anti-Virus
NO ANTI-VIRUS SOFTWARE
Browser
Microsoft® Edge (Windows 10 Only)
Notebook Mouse
INTEGRATED 2 BUTTON TOUCHPAD MOUSE
Webcam
INTEGRATED 1MP HD WEBCAM
Warranty
3 Year Standard Warranty (1 Month Collect & Return, 1 Year Parts, 3 Year Labour)
Delivery
STANDARD INSURED DELIVERY TO UK MAINLAND (MON-FRI)
Build Time
Standard Build - Approximately 3 to 5 working days
Welcome Book
PCSpecialist Welcome Book - United Kingdom & Republic of Ireland
 

hogfish

Bronze Level Poster
I don't know if this is the same problem, but my mouse occasionally freezes on two machines.
I just
rmmod psmouse
modprobe psmouse

That always fixes the problem. I suspect a rare race condition or other timing problem in the driver.
Changing that ahci.mobile setting might well avoid such a bug. I did try reporting this to the kernel mailing list some years ago, but got no response. Which may not be surprising, given how little information I could provide.

For anyone who does not know, those commands have to be given as root (or laboriously via sudo if you follow that sort of recommmendation).
 
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