Arch Linux

shemux

Member

Registered: 2018-03-17

Posts: 4

Inspiron 7348 Freeze video when adjust brightness (Xorg Only)

Dell Inspiron 13 7000 (7348)
Core  i7-5500U
HD Graphics 5500 (Broadwell GT2)

I've been searching for weeks a solution to my problem.
When I'm running in Wayland the brightness works perfectly, but when I switch to Xorg it's freeze when I try to adjust it. In Xorg the CPU usage goes to 100% for a while. If I alter into volume and brigthness keys I need to wait a long time to it back to normal, it shows that one icon adjusting volume and brigthness standing for a while. If I use the computer and don't press the brightness key, only volume, the volume keys is always fast to respond.

I have some programs which do not run well in Waylland.

Curiosly when I run any Live distro based in Arch Linux runing Xorg, Works perfectly.

What did I tryied:
Change grub GRUB_CMDLINE_LINUX_DEFAULT="quiet splash X"
X means all thoses:
acpi_backlight=video
acpi_backlight=vendor
acpi_backlight=native
acpi_backlight=none

of course I updated grub every time with:

 grub-mkconfig -o /boot/grub/grub.cfg 

no success Still Freezing/Lagging when use fn multimedia keys

I also installed "xf86-video-intel" for use at "/etc/X11/xorg.conf.d/20-intel.conf" the following settings

Section "Device"
   Identifier  "Intel Graphics"
   Driver      "intel"
   Option      "DRI" "2"           
   Option      "TearFree"    "true"
   Option      "AccelMethod"  "sna"
   Option      "Backlight"  "intel_backlight"
EndSection

even than "/sys/class/backlight" has only a folder called "intel_backlight"

I don't know what should I do to fix my problem. Is there a way to it don't be a Xorg problem but a Gnome?

Last edited by shemux (2018-03-21 22:31:10)

shemux

Member

Registered: 2018-03-17

Posts: 4

Re: Inspiron 7348 Freeze video when adjust brightness (Xorg Only)

No one knows what should I do?

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,659

Re: Inspiron 7348 Freeze video when adjust brightness (Xorg Only)

Remove that intel_backlight option, in fact try to remove that whole conf and xf86-video-intel with it and use the modesetting driver instead.

shemux

Member

Registered: 2018-03-17

Posts: 4

Re: Inspiron 7348 Freeze video when adjust brightness (Xorg Only)

@V1del, thanks for replying. But before everything I tried, the system had only GDM+Gnome, so I had not the package xf86-video-intel nor intel_backlight option in "/etc/X11/xorg.conf.d/20-intel.conf".
I also tryied install only xf86-video-intel, without the file 20-intel.conf