Difference between revisions of "HBW test/test"

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{{DISPLAYTITLE:How to control panel brightness and backlight}}
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{{DISPLAYTITLE:How to update kernel for hardware enablement}}
  
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=== Brightness Control ===
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=== fetch the following packages ===
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kernel
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
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# valid range : 0x0FFF (dark) ~ 0x0000 (brightest) # highest 4 bits must be zero
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linux-buildinfo-5.15.0-1029-mtk_5.15.0-1029.33advantech1_arm64.deb
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# notice: keep highest 4 bits zero or brightness will be dark whatever lower 12 bits set
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linux-headers-5.15.0-1029-mtk_5.15.0-1029.33advantech1_arm64.deb
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linux-image-5.15.0-1029-mtk_5.15.0-1029.33advantech1_arm64.deb
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# use hexadecimal without leading "0x" (default:7FF)
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linux-modules-5.15.0-1029-mtk_5.15.0-1029.33advantech1_arm64.deb
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BRIGHTNESS=6FF
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linux-mtk-headers-5.15.0-1029_5.15.0-1029.33advantech1_all.deb
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sudo i2cset -f -y 2 0x20 0x90 $(( $((16#$BRIGHTNESS)) / 256 )) $(( $((16#$BRIGHTNESS)) % 256 )) i
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</syntaxhighlight>
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dependency
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# keep setting
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<syntaxhighlight lang="bash">
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sudo i2cset -f -y 2 0x20 0xe8 0x01 0x78 0x45 0x56 i && sudo reboot
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libssl1.1_1.1.1-1ubuntu2.1~18.04.23_arm64.deb
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wget http://archive.ubuntu.com/ubuntu/pool/main/o/openssl/libssl1.1_1.1.0g-2ubuntu4_amd64.deb
 
</syntaxhighlight>
 
</syntaxhighlight>
  
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=== Backlight Control ===
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=== install all fetched packages ===
 
<syntaxhighlight lang="bash">
 
<syntaxhighlight lang="bash">
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# enable
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sudo dpkg -i *deb
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sudo i2cset -f -y 2 0x20 0x95 0
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sudo reboot
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# disable
 
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sudo i2cset -f -y 2 0x20 0x95 1
 
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# keep setting
 
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# notice: if "disable" is set, the panel keeps backlight disabled after reboot
 
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sudo i2cset -f -y 2 0x20 0xe8 0x01 0x78 0x45 0x56 i && sudo reboot
 
 
</syntaxhighlight>
 
</syntaxhighlight>

Revision as of 10:52, 26 January 2024


fetch the following packages

kernel 

linux-buildinfo-5.15.0-1029-mtk_5.15.0-1029.33advantech1_arm64.deb
linux-headers-5.15.0-1029-mtk_5.15.0-1029.33advantech1_arm64.deb
linux-image-5.15.0-1029-mtk_5.15.0-1029.33advantech1_arm64.deb
linux-modules-5.15.0-1029-mtk_5.15.0-1029.33advantech1_arm64.deb
linux-mtk-headers-5.15.0-1029_5.15.0-1029.33advantech1_all.deb

dependency 

libssl1.1_1.1.1-1ubuntu2.1~18.04.23_arm64.deb
wget http://archive.ubuntu.com/ubuntu/pool/main/o/openssl/libssl1.1_1.1.0g-2ubuntu4_amd64.deb

install all fetched packages

sudo dpkg -i *deb
sudo reboot
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