Lowyat.NET: Latest topics by jacobcheong

Bluetooth Mouse & Keyboard Keeps Freezing

jacobcheong — Tue, 09 Feb 2021 09:51:09 +0800

Hi guys,
I have a Logitech MX Anywhere 2S Bluetooth Wireless mouse and Logitech Bluetooth Keyboard K375 connected to my Windows 10 Pro laptop via Bluetooth.
Have installed the Logitech Options app that enables the mouse and keyboard to work seamlessly.
Intermittently, the mouse and keyboard freezes although both devices are fully connected via Bluetooth per indicator on Windows 10 taskbar.

I have performed the following:

Bluetooth Driver - Removal / Installation / Update Driver
1) Uninstalled the Intel Wireless Bluetooth driver and reinstalled the driver using Intel Driver & Support Assistant

Power Management - Turn Off Power Saving
2) Device Manager > Bluetooth > Intel Wireless Bluetooth (tried looking for Power Management tab but none available)
3) Device Manager > Human Interface Devices > Bluetooth Low Energy GATT compliant HID device > Power Management > uncheck "Allow this computer to turn off this device to save power"

Restarted Bluetooth Service
4) Run > services.msc > Bluetooth Support Service > Status is Running > Properties > Startup Type > Automatic

BUT the problem persists intermittently...

Are there any other settings that I need to adjust to resolve this?

Hope to get some guidance from the experts here.
Thanks in advance.

Laptop USB-C and 4K External Monitor Refresh Rate

jacobcheong — Sun, 07 Feb 2021 16:26:32 +0800

Background:
I have recently purchased a 4K external monitor (ie. Dell S3221QS, 3840 x 2160 @ 60 Hz) for my home office use.
I have a Lenovo ThinkBook 14s laptop that I have purchased from Lenovo a couple of months back.
Both laptop and external monitor specs are as listed below.

I noticed that there is a lag when the external monitor resolution is set to 4K (ie. 3840 x 2160) and connection using HDMI-HDMI cable.
The Intel UHD Graphics driver which is able to support a max refresh rate of 75Hz (@ 3840 x 2160) according to Intel Driver & Support Assistant.

Upon further checking HDMI standards online, the HDMI 1.4b port on the Lenovo ThinkBook 14s has a refresh rate limitation of 30Hz only at 4K resolution.
For info, I charge my laptop using the Lenovo supplied 65W AC Adapter Slim (3pin)-UK (USB Type C) which happens to be a Display Port / Power Delivery port.

Question:
1) Will I be able to achieve 4K resolution @ 60Hz if I connected my laptop to the external monitor using USB-C (from laptop) to Display Port (to monitor)?

2) What options are available if the USB-C slot is used for display but also require Power Delivery?

Hope to get some guidance from the experts here.

Thank you so much.

Monitor Specs:
Dell S3221QS
3840 x 2160 @ 60 Hz
2 x HDMI (HDCP 2.2)
DisplayPort (DisplayPort 1.2 mode)
Audio line-out
USB 3.0 upstream
USB 3.0 downstream
USB 3.0 downstream with Battery Charging 1.2

Laptop Specs:

Lenovo ThinkBook 14s
Country/Region : Malaysia
Processor : Intel Core i7-10510U Processor (1.80GHz, up to 4.90GHz with Turbo Boost, 4 Cores, 8MB Cache)
Preload OS : Windows 10 Pro 64
Preload Language : Windows 10 Pro 64 English/Simplified Chinese
DIMM Memory : 16GB DDR4 2666MHz SODIMM
Storage Selection : 512GB Solid State Drive, M.2 2242, PCIe-NVMe, TLC
Display : 14.0" FHD (1920x1080), IPS, 250nits, Anti-glare, Non-touch
Graphics : AMD Radeon 630 2GB GDDR5 32bits
Wireless LAN : Wi-Fi 6 2x2 AX, Bluetooth Version 5.0 or above
Security Chip : Discrete TPM ROW
Camera : 720p HD Camera, No Mic
Microphone : Array Microphone
Surface Treatment : Anodizing Sandblasting
Palmrest : Metal
Battery : 4 Cell Li-Polymer Internal Battery, 45Wh
Power Adapter : 65W AC Adapter Slim (3pin)-UK (USB Type C)

Lenovo ThinkBook 14s Ports / Slots:
USB-C Gen 2 (display port / power delivery)
2 x USB 3.1 Gen 1 (one always on)
Headphone / mic combo
HDMI 1.4b

Compaq Presario X1000 RAM and HDD

jacobcheong — Sun, 02 Oct 2011 11:00:20 +0800

Hi all,
I have a Compaq Presario X1000 (S/N X1012AL) notebook and I am looking at upgrading the current RAM (2x256MB) and 30GB (IDE HDD).

I am not too sure what my RAM is but some people say it's DDR1 and some say it's SDRAM.
Need some help to determine the RAM type.

Anyone can give advise on how to determine the RAM type?

Any advise before buying a suitable RAM and HDD for this laptop?

Thanks in advance!!