Category Archives: Computer

ARM64 Linux Performance Tuning

This is personal notebook for ARM64 performance tuning.

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Intel Coffee Lake Ubuntu Linux 速度太慢

這個也是怪自己,最近因為 Windows VM 不知道為什麼速度變很慢,所以改用 Linux 跑 VM ,雖然 Linux 下 VM 速度比 Windows 快,但是整體的感覺還是慢.本來以為是我的 i5-9600k VM 表現不好,但是看著 CPU utilization 感覺還是怪

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Windows 10 存取 Ubuntu Samba 問題

不知道是不是公司控管電腦的問題,我公司的電腦一直沒辦法存取 Samba 的目錄

今天終於下定決定找一找可能是什麼問題

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[Gentoo][ARM64] Compile qtwebengine fail

If CPU number is too much, compile qtwebengine will fail, seems ninja compile issues.

it better to reduce CPU number under 8, batter number is 4 or 6.

just put MAKEOPTS=”-j 4″ on your /etc/portage/make.conf

It can be roll back after compile qtwebengine.

modify package.env can support special MAKEOPTS command on some packages.
ex:

echo "dev-qt/qtwebengine lowcpu.conf" | sudo tee -a /etc/portage/package.env
mkdir -p /etc/portage/env
echo "MAKEOPTS=\"-j4\"" | sudo tee /etc/portage/env/lowcpu.conf

ref.
[SOLVED] emerging qtwebengine-5.7.1
Memory problems on QtWebEngine build

htop more column for mass CPUs

htop can support multiple columns in one screen, just press F2 enter setup mode, and change left column and right column to CPUs (1-4/8) [Bar] and CPUs (5-8/8) [Bar]

htoprc , put it on /etc/htoprc or ~/.config/htop/htoprc

# Beware! This file is rewritten by htop when settings are changed in the interface.
# The parser is also very primitive, and not human-friendly.
fields=0 48 17 18 38 39 40 2 46 47 49 1
sort_key=1
sort_direction=1
hide_threads=0
hide_kernel_threads=1
hide_userland_threads=0
shadow_other_users=0
show_thread_names=0
show_program_path=1
highlight_base_name=0
highlight_megabytes=1
highlight_threads=1
tree_view=0
header_margin=1
detailed_cpu_time=0
cpu_count_from_zero=0
show_cpu_usage=1
show_cpu_frequency=0
update_process_names=0
account_guest_in_cpu_meter=0
color_scheme=0
enable_mouse=1
delay=15
left_meters=LeftCPUs4 Memory Swap
left_meter_modes=1 1 1
right_meters=RightCPUs4 Tasks LoadAverage Uptime
right_meter_modes=1 2 2 2

KDE Plasma CPU High Usage After Install Nvidia Driver

My notebook with RTX3060 has this issue after do something I don’t know. OS is Ubuntu 18.04

Everything is ok after first time install RTX3060, there is no high cpu issue, but after install IME(gcin), nomachine and anydesk and do something I don’t remember, plasma high cpu usage issue happened.

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Google 雲端硬碟搬家

Windows 主硬碟快爆了,所以要將原來放在 C 的雲端硬碟 Cache 搬到 D 槽

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The NVM Checksum Is Not Valid

這個是我 Intel i350-T4 最近出現的錯誤訊息,是最近 Power 壞掉之後才發生的,錯誤訊息如下

[ 775.510780] igb: Intel(R) Gigabit Ethernet Network Driver – version 5.4.0-k
[ 775.510782] igb: Copyright (c) 2007-2014 Intel Corporation.
[ 775.526676] igb 0000:01:00.0: The NVM Checksum Is Not Valid
[ 775.602407] igb: probe of 0000:01:00.0 failed with error -5
[ 775.617632] igb 0000:01:00.1: The NVM Checksum Is Not Valid
[ 775.693405] igb: probe of 0000:01:00.1 failed with error -5
[ 775.708632] igb 0000:01:00.2: The NVM Checksum Is Not Valid
[ 775.784404] igb: probe of 0000:01:00.2 failed with error -5
[ 775.799632] igb 0000:01:00.3: The NVM Checksum Is Not Valid
[ 775.875410] igb: probe of 0000:01:00.3 failed with error -5
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Windows 10 滑鼠會頓的問題 Thinkpad Docking

本來用 Microsoft Bluetooth mouse 滑一滑一直覺得滑鼠會頓,想說藍牙被干擾的問題吧,雖然小困擾但是也是不太在意

但是後來換了一隻有線的滑鼠,還是會這樣,這就有點奇怪了

找了一下可能是 Realtek FMAPP.exe 或是 Realtek audio service 的問題
改名 FMAPP.exe 和在 msconfig.exe -> Services 內 disable Realtek audio service 就可以

用了幾天看起來有改善,在這邊記錄一下

2015 年就有人發現了到現在 Realtek 還是沒改善啊

註:最後找半天發現都不是這些問題,而是我只要開啟雙螢幕就會,猜測可能是 Intel Graph 能力不夠或是驅動程式問題
Notebook 是 Thinkpad X1 ,螢幕是 Samsung 4K Monitor

2020/12/10 更新
看起來是 Thinkpad 配上 ThunderBolt docking 就有可能會發生

總結以下一些我覺得有用的方式
1) 接上 docking 時關掉內建螢幕
2) 發生時調整電源模式,例如 high -> balance ,然後再 balance -> high
3) reboot 會消失
4) Power mode 從 advance power saving 改回傳統的 s3 (較低可能性)
5) 關掉 SysMain (superfetch) (較低可能性)

Ref.
Windows 10 Mouse Lagging
解決Windows 10的滑鼠lag問題
How to Fix Mouse Lag on Windows 10

2021/02/26
放棄

應該是 Thinkpad Docking 的問題,用 Thinkpad Docking Mouse Freeze 下去找會有很多案例,要不然就不要用 Thinkpad Docking ,其他家的都沒問題,要不然就還是接到 Notebook 吧
External mouse randomly freezes when connected via dock

Winodws7 無法存取 Windows Installer 服務

這個問題 Google 出來這個 URL 的方法我不能用
當您嘗試安裝 Office 時,無法存取 [Windows Installer 服務]

找了好久繞了好大一圈,最後解決方法是
執行 services.msc 之後,將 Windows Installer 啟動就可以了
Managing Services in Windows 7

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