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Blackmorse
n00b
Joined: 28 Mar 2021
Posts: 52
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 Posted: Tue May 04, 2021 3:14 pm Post subject: It takes a long time to turn screen on |
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Hi,
I have problems related to my laptop's screen
After It was turned off, usually It takes several minutes to turn it on again.
E.g. this happens after the sleep mode.
Another case is to set brightness to 0% using Fn+F4. After that, Fn+F5 doesn't help. I need to wait several minutes (sometimes after shorter period of time switching to TTY1-6 and back to TTY7 helps) before I will get the image again.
Do not know what info should I provide, I have KDE installed and intel+nvidia graph. cards on my laptop.. |
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alamahant
Advocate
Joined: 23 Mar 2019
Posts: 3878
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| Posted: Tue May 04, 2021 3:43 pm Post subject: |
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Plrease look into
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/sys/class/backlight
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and find brightness.
Then test by echoing values to it.
In my case
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/bin/echo 250 > /sys/class/backlight/intel_backlight/brightness
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If it works ok then its just a glitchy kde......
What is the manufacturer of your laptop?
Please check these kernel configs also
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CONFIG_DRM_NOUVEAU_BACKLIGHT=y
# Backlight & LCD device support
CONFIG_BACKLIGHT_CLASS_DEVICE=y
CONFIG_BACKLIGHT_KTD253=m
CONFIG_BACKLIGHT_LM3533=m
CONFIG_BACKLIGHT_PWM=m
CONFIG_BACKLIGHT_DA903X=m
CONFIG_BACKLIGHT_DA9052=m
CONFIG_BACKLIGHT_MAX8925=m
CONFIG_BACKLIGHT_APPLE=m
CONFIG_BACKLIGHT_QCOM_WLED=m
CONFIG_BACKLIGHT_SAHARA=m
CONFIG_BACKLIGHT_WM831X=m
CONFIG_BACKLIGHT_ADP5520=m
CONFIG_BACKLIGHT_ADP8860=m
CONFIG_BACKLIGHT_ADP8870=m
CONFIG_BACKLIGHT_88PM860X=m
CONFIG_BACKLIGHT_PCF50633=m
CONFIG_BACKLIGHT_AAT2870=m
CONFIG_BACKLIGHT_LM3630A=m
CONFIG_BACKLIGHT_LM3639=m
CONFIG_BACKLIGHT_LP855X=m
CONFIG_BACKLIGHT_LP8788=m
CONFIG_BACKLIGHT_PANDORA=m
CONFIG_BACKLIGHT_SKY81452=m
CONFIG_BACKLIGHT_AS3711=m
CONFIG_BACKLIGHT_GPIO=m
CONFIG_BACKLIGHT_LV5207LP=m
CONFIG_BACKLIGHT_BD6107=m
CONFIG_BACKLIGHT_ARCXCNN=m
CONFIG_BACKLIGHT_RAVE_SP=m
# end of Backlight & LCD device support
CONFIG_HID_PICOLCD_BACKLIGHT=y
CONFIG_LEDS_TRIGGER_BACKLIGHT=m
CONFIG_CROS_KBD_LED_BACKLIGHT=m
CONFIG_ACPI_VIDEO=m
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Also check passing one of these at kernel cmd line in grub
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acpi_backlight=video
acpi_backlight=vendor
acpi_backlight=native
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.......whichever works best....
_________________
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Blackmorse
n00b
Joined: 28 Mar 2021
Posts: 52
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| Posted: Mon May 10, 2021 7:36 am Post subject: |
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Seems that rebuilding the kernel with new configs does solved my problem!
But I curious about what exactly line helped?
I guess I've enabled support reduntant number of options..
I'm using Asus N550J |
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