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Author: Silveira

Books in 2024

This year, I will try to at least note it down the books I read. Maybe write some brief words and impressions. My main goals are:

  1. To keep track of it. Sometimes I’m not sure if I read a book already or if I read about the book. More than once I read a book again by mistake with the constant company of a feeling of having read that before (“déjà lu”?). I know there are services and social networks dedicated to track and review books but right now I’m much more inclined to use my blog as an informal and quick way to doing that. I’m not planning to write reviews or summaries. I don’t have much to add to everything that has been already said on and about these books. I do plan to write some raw thoughts about what I just read for my own sake.
  2. To recommend when due and perhaps receive recommendations. I’m very grateful for all recommendations I have received over the years. It’s been a great way to add some randomness and sometimes unexpected surprises to my informational intake. I try to be open-minded these suggestions, although it may take years to read them. So by having these notes open here I hope to help recommend some of these books.
  3. To encourage myself and others on reading good books. I dislike when reading books is praised as something good by itself. You have to check the “nutritional” value of what you consume, including media and books.

These were the books I read in 2024 so far:

  1. The Motorcycle Diaries by Ernesto “Che” Guevara.
  2. What If?: Serious Scientific Answers to Absurd Hypothetical Questions by Randall Munroe
  3. No Dream Is Too High: Life Lessons From a Man Who Walked on the Moon by Buzz Aldrin

55R646

  • https://www.rtings.com/tv/reviews/tcl/6-series-r646-2021-qled
  • https://www.tcl.com/us/en/products/home-theater/6-series/55-class-6-series-4k-qled-hdr-smart-google-tv-55r646
  • https://www.bestbuy.com/site/tcl-55-class-6-series-mini-led-qled-4k-uhd-smart-google-tv/6470273.p?skuId=6470273

tmux save scrollback to a file

Before each command, run the prefix (default Ctrl+B).

:capture-pane -pane -S -3000
:save-buffer buffer.txt

This will write all scrollback from that pane to a file ~/buffer.txt.

Lenovo IdeaPad 1

Lenovo IdeaPad 1 14″ Laptop Computer – Cloud Grey (AMD Ryzen 5 5500U 2.1GHz Processor; 8GB DDR4-3200 Onboard RAM; 256GB Solid State Drive; AMD Radeon 7 Graphics) USD$ 229.99 + taxes.

Micro Center product page screenshot.

Went to the BIOS and changed it to performance mode. Got the Windows keys out and installed Ubuntu 22.04.3 LTS (jammy).

PCI buses information:

$ sudo update-pciids
$ lspci -nn

00:00.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne Root Complex [1022:1630]
00:00.2 IOMMU [0806]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne IOMMU [1022:1631]
00:01.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge [1022:1632]
00:02.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge [1022:1632]
00:02.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634]
00:02.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634]
00:02.4 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge [1022:1634]
00:08.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge [1022:1632]
00:08.1 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus [1022:1635]
00:08.2 PCI bridge [0604]: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus [1022:1635]
00:14.0 SMBus [0c05]: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller [1022:790b] (rev 51)
00:14.3 ISA bridge [0601]: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge [1022:790e] (rev 51)
00:18.0 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 0 [1022:1448]
00:18.1 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 1 [1022:1449]
00:18.2 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 2 [1022:144a]
00:18.3 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 3 [1022:144b]
00:18.4 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 4 [1022:144c]
00:18.5 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 5 [1022:144d]
00:18.6 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 6 [1022:144e]
00:18.7 Host bridge [0600]: Advanced Micro Devices, Inc. [AMD] Renoir Device 24: Function 7 [1022:144f]
01:00.0 SD Host controller [0805]: O2 Micro, Inc. SD/MMC Card Reader Controller [1217:8621] (rev 01)
02:00.0 Network controller [0280]: MEDIATEK Corp. MT7921 802.11ax PCI Express Wireless Network Adapter [14c3:7961]
03:00.0 Non-Volatile memory controller [0108]: Micron Technology Inc 2450 NVMe SSD [HendrixV] (DRAM-less) [1344:5411] (rev 01)
04:00.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] Lucienne [1002:164c] (rev c2)
04:00.1 Audio device [0403]: Advanced Micro Devices, Inc. [AMD/ATI] Renoir Radeon High Definition Audio Controller [1002:1637]
04:00.2 Encryption controller [1080]: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor [1022:15df]
04:00.3 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1 [1022:1639]
04:00.4 USB controller [0c03]: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1 [1022:1639]
04:00.5 Multimedia controller [0480]: Advanced Micro Devices, Inc. [AMD] ACP/ACP3X/ACP6x Audio Coprocessor [1022:15e2] (rev 01)
04:00.6 Audio device [0403]: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller [1022:15e3]
05:00.0 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] [1022:7901] (rev 81)
05:00.1 SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA Controller [AHCI mode] [1022:7901] (rev 81)

Installing AMD drivers:

$ sudo apt install gdebi
$ sudo gdebi amdgpu-install_5.7.50702-1_all.deb
$ amdgpu-install

Drivers information:

$ glxinfo -B
name of display: :0
display: :0  screen: 0
direct rendering: Yes
Extended renderer info (GLX_MESA_query_renderer):
    Vendor: AMD (0x1002)
    Device: AMD Radeon Graphics (renoir, LLVM 16.0.6, DRM 3.49, 6.2.0-36-generic) (0x164c)
    Version: 23.2.0
    Accelerated: yes
    Video memory: 2048MB
    Unified memory: no
    Preferred profile: core (0x1)
    Max core profile version: 4.6
    Max compat profile version: 4.6
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.2
Memory info (GL_ATI_meminfo):
    VBO free memory - total: 1138 MB, largest block: 1138 MB
    VBO free aux. memory - total: 2991 MB, largest block: 2991 MB
    Texture free memory - total: 1138 MB, largest block: 1138 MB
    Texture free aux. memory - total: 2991 MB, largest block: 2991 MB
    Renderbuffer free memory - total: 1138 MB, largest block: 1138 MB
    Renderbuffer free aux. memory - total: 2991 MB, largest block: 2991 MB
Memory info (GL_NVX_gpu_memory_info):
    Dedicated video memory: 2048 MB
    Total available memory: 5120 MB
    Currently available dedicated video memory: 1138 MB
OpenGL vendor string: AMD
OpenGL renderer string: AMD Radeon Graphics (renoir, LLVM 16.0.6, DRM 3.49, 6.2.0-36-generic)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 23.2.0-devel
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile

OpenGL version string: 4.6 (Compatibility Profile) Mesa 23.2.0-devel
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile

OpenGL ES profile version string: OpenGL ES 3.2 Mesa 23.2.0-devel
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20

Testing if APU is working:

$ sudo apt-get install mesa-utils
$ vblank_mode=0 glxgears
ATTENTION: default value of option vblank_mode overridden by environment.
54476 frames in 5.0 seconds = 10895.144 FPS
54569 frames in 5.0 seconds = 10913.684 FPS
55201 frames in 5.0 seconds = 11038.656 FPS

Benchmarking with glmark2:

$ sudo apt-get install glmark2
$ glmark2 --show-all-options

=======================================================
    glmark2 2021.02
=======================================================
    OpenGL Information
    GL_VENDOR:     AMD
    GL_RENDERER:   AMD Radeon Graphics (renoir, LLVM 16.0.6, DRM 3.49, 6.2.0-36-generic)
    GL_VERSION:    4.6 (Compatibility Profile) Mesa 23.2.0-devel
=======================================================
...
glmark2 Score: 2429

Review of some small Mac apps

I got these app licenses in a bundle at BundleHunt for not much. Here is a quick review and impressions of these:

  • CleanBoard: Copy twice to remove the formatting of the text you are copying. Perfect.
  • CopyPaste Pro: list previous clipboards so you can have a list of previous texts and images you cut to paste. I used to use something like this on Linux and it was super handy so I wanted to try it out. It also does a lot of things and it’s full of quirks. I’m still getting used.
  • Grab2Text: on screen OCR. One Shift+Cmd+2 and you select a rectangle and it outputs the text from the image to the clipboard. The OCR is ok. Solves an infrequent but annoying problem.
  • iClock: Some calendar, timezone, clock functions right in the menu bar.
  • 1000 OpenType Fonts: a zipfile with fonts. There is no app. You have to use the Finder preview to see and install the fonts. Installing all fonts would make the computer slow. I hope to use some of these fonts.
  • AI Image Enlarger – Photo Upscaler: Not good. I did a few tests and it pretty much smoothed the photos, actually loosing photo information in the upscaling. Probably better off just using Stable Diffusion with DiffusionBee.
  • Musify Music Downloader: TBD
  • Mass Rename: TBD

Placa-pai

Mostrei pra ele uma placa-mãe. Depois ele me traz e diz que é uma placa-mamãe.

Mostro pra ele que é a placa-mãe do computador da mamãe. Ele aponta pro meu computador e diz que quer ver a placa-pai.

maybe

while true; do if [[ $(($RANDOM % 2 )) = "1" ]] then; echo "y"; else echo "n"; fi done

“Morning Bell” by Iman Mersal

The eye opens like a curtain rising
In the dark, feet search for something real
Consciousness hasn’t happened yet
And the floorboards are skin temperature
A fresh repetition, today will be one more or one less
An impromptu concert strikes up in the kitchen
Maybe this black coffee is the morning bell-
the prize you win for returning safe from sleep