Jonas
7 February 2021 20:59
1
Hello,
I installed Manjaro KDE on an old desktop, Dell Optiplex 9010, most things work fine. However, the screen’s brightness won’t ajust in any way, neither in the DE settings nor with terminal applications like xbacklight. The system kind of pretens like if it is adjusting the brightness, but the actual brightness is unchanged.
$ cat /sys/class/backlight/acpi_video0/brightness
3
What could be wrong?
Thanks in advance.
Fabby
9 February 2021 15:36
2
Welcome to Manjaro!
Please read this:
Welcome to Manjaro!
To allow all of us helpful gurus on this forum TO HELP YOU, we need some basic information about your system. This probably means you described the symptoms of your problem, but now we need some more information to know where the origin of your issue is exactly.
Someone probably linked you to this tutorial, so if you’re reading this in response to a question, please click the green link above this text to bring you to the full and unabridged text of the tutorial…
and post some more information so we can see what’s really going on. Now we know the symptom of the disease, but we need some more probing to know where the origin lies…
An inxi --admin --verbosity=7 --filter --no-host --width
would be the minimum required information… (Personally Identifiable Information like serial numbers and MAC addresses will be filtered out by the above command)
What does:
echo 10 | sudo tee /sys/class/backlight/acpi_video0/brightness
do?
What’s the output of:
grep GRUB_CMDLINE_LINUX_DEFAULT /etc/default/grub
P.S. If you enter a bit more details in your profile, we can also see which Desktop Environment you’re using, which CPU/GPU you have, …
Jonas
18 April 2021 10:34
3
It seems like you expect me to know about all these crazy-complicated commands, but very few people do. Please just ask when you need information, but there is no way someone who is not an IT professional could know about all your requirements.
I will answer your questions 1, 2 and 3 when I get home.
Jonas
18 April 2021 10:37
4
If you find it a problem that my profile has too little information, you should probably talk to the administrators of these forums, not me, if they could add the requirements you ask for. In the meanwhile, there is nothing I can do, since I have no idea exactly what information you are asking for on my profile.
Fabby
18 April 2021 12:38
5
Jonas
28 May 2021 17:30
7
I’m finally home. Your howto-post is not relevant for me as I’ve never been a wizard at Windows. Also, being a Manjaro power user in order to use this forum should not be necessary.
Jonas
28 May 2021 17:36
8
$ inxi --admin --verbosity=7 --filter --no-host --width
System:
Kernel: 5.10.7-3-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.1
parameters: BOOT_IMAGE=/boot/vmlinuz-5.10-x86_64
root=UUID=5a0d50ac-2042-4891-9af1-3a8a7b665d86 rw quiet apparmor=1
security=apparmor udev.log_priority=3
Desktop: KDE Plasma 5.20.5 tk: Qt 5.15.2 wm: kwin_x11 dm: SDDM
Distro: Manjaro Linux
Machine:
Type: Desktop System: Dell product: OptiPlex 9010 v: 01 serial: <filter>
Chassis: type: 15 serial: <filter>
Mobo: Dell model: 051FJ8 v: A01 serial: <filter> UEFI: Dell v: A12
date: 01/10/2013
Battery:
Device-1: hidpp_battery_0 model: Logitech Wireless Keyboard K540/K545
serial: <filter> charge: 100% (should be ignored) rechargeable: yes
status: Discharging
Device-2: hidpp_battery_1 model: Logitech Wireless Mouse M510
serial: <filter> charge: 55% (should be ignored) rechargeable: yes
status: Discharging
Memory:
RAM: total: 7.66 GiB used: 2.69 GiB (35.1%)
RAM Report: permissions: Unable to run dmidecode. Root privileges required.
CPU:
Info: Quad Core model: Intel Core i5-3470 bits: 64 type: MCP
arch: Ivy Bridge family: 6 model-id: 3A (58) stepping: 9 microcode: 21
L2 cache: 6 MiB bogomips: 25548
Speed: 1597 MHz min/max: 1600/3600 MHz Core speeds (MHz): 1: 1597 2: 1596
3: 1597 4: 1597
Flags: acpi aes aperfmperf apic arat arch_perfmon avx bts clflush cmov
constant_tsc cpuid cpuid_fault cx16 cx8 de ds_cpl dtes64 dtherm dts epb ept
erms est f16c flexpriority flush_l1d fpu fsgsbase fxsr ht ibpb ibrs ida
lahf_lm lm mca mce md_clear mmx monitor msr mtrr nonstop_tsc nopl nx pae pat
pbe pcid pclmulqdq pdcm pebs pge pln pni popcnt pse pse36 pti pts rdrand
rdtscp rep_good sep smep smx ss ssbd sse sse2 sse4_1 sse4_2 ssse3 stibp
syscall tm tm2 tpr_shadow tsc tsc_deadline_timer vme vmx vnmi vpid x2apic
xsave xsaveopt xtopology xtpr
Vulnerabilities: Type: itlb_multihit status: KVM: VMX disabled
Type: l1tf
mitigation: PTE Inversion; VMX: conditional cache flushes, SMT disabled
Type: mds mitigation: Clear CPU buffers; SMT disabled
Type: meltdown mitigation: PTI
Type: spec_store_bypass
mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1
mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Full generic retpoline, IBPB: conditional,
IBRS_FW, STIBP: disabled, RSB filling
Type: srbds status: Vulnerable: No microcode
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: Intel Xeon E3-1200 v2/3rd Gen Core processor Graphics vendor: Dell
driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:0152
Display: x11 server: X.Org 1.20.10 compositor: kwin_x11 driver:
loaded: intel display ID: :0 screens: 1
Screen-1: 0 s-res: 1920x1080 s-dpi: 96 s-size: 508x285mm (20.0x11.2")
s-diag: 582mm (22.9")
Monitor-1: HDMI2 res: 1920x1080 dpi: 81 size: 600x340mm (23.6x13.4")
diag: 690mm (27.2")
OpenGL: renderer: Mesa DRI Intel HD Graphics 2500 (IVB GT1)
v: 4.2 Mesa 20.3.3 compat-v: 3.0 direct render: Yes
Audio:
Device-1: Intel 7 Series/C216 Family High Definition Audio vendor: Dell
driver: snd_hda_intel v: kernel bus ID: 00:1b.0 chip ID: 8086:1e20
Sound Server: ALSA v: k5.10.7-3-MANJARO
Network:
Device-1: Intel 82579LM Gigabit Network vendor: Dell driver: e1000e
v: kernel port: f080 bus ID: 00:19.0 chip ID: 8086:1502
IF: eno1 state: up speed: 100 Mbps duplex: full mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: noprefixroute scope: link
WAN IP: <filter>
RAID:
Hardware-1: Intel SATA Controller [RAID mode] driver: ahci v: 3.0 port: f060
bus ID: 00:1f.2 chip ID: 8086.2822 rev: 04
Drives:
Local Storage: total: 465.76 GiB used: 86.8 GiB (18.6%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/sda maj-min: 8:0 vendor: Seagate model: ST500DM002-1BD142
size: 465.76 GiB block size: physical: 4096 B logical: 512 B speed: 6.0 Gb/s
serial: <filter> rev: KC47
Optical-1: /dev/sr0 vendor: TSSTcorp model: DVD+-RW SN-208BB rev: D500
dev-links: cdrom
Features: speed: 24 multisession: yes audio: yes dvd: yes
rw: cd-r,cd-rw,dvd-r,dvd-ram state: running
Partition:
ID-1: / raw size: 228.33 GiB size: 223.75 GiB (97.99%)
used: 86.8 GiB (38.8%) fs: ext4 dev: /dev/sda4 maj-min: 8:4 label: N/A
uuid: 5a0d50ac-2042-4891-9af1-3a8a7b665d86
ID-2: /boot/efi raw size: 300 MiB size: 299.4 MiB (99.80%)
used: 416 KiB (0.1%) fs: vfat dev: /dev/sda1 maj-min: 8:1 label: N/A
uuid: 3899-63A9
Swap:
Kernel: swappiness: 60 (default) cache pressure: 100 (default)
ID-1: swap-1 type: partition size: 8.8 GiB used: 0 KiB (0.0%) priority: -2
dev: /dev/sda3 maj-min: 8:3 label: N/A
uuid: b6e364b0-9b01-464c-994a-987555562a54
Unmounted:
ID-1: /dev/sda2 maj-min: 8:2 size: 228.33 GiB fs: ext4 label: N/A
uuid: 0dd75152-ca35-4253-ad27-a32839371a6d
USB:
Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0
speed: 480 Mb/s chip ID: 1d6b:0002
Hub-2: 1-1:2 info: Intel Integrated Rate Matching Hub ports: 6 rev: 2.0
speed: 480 Mb/s chip ID: 8087:0024
Hub-3: 2-0:1 info: Full speed (or root) Hub ports: 2 rev: 2.0
speed: 480 Mb/s chip ID: 1d6b:0002
Hub-4: 2-1:2 info: Intel Integrated Rate Matching Hub ports: 8 rev: 2.0
speed: 480 Mb/s chip ID: 8087:0024
Hub-5: 3-0:1 info: Full speed (or root) Hub ports: 4 rev: 2.0
speed: 480 Mb/s chip ID: 1d6b:0002
Device-1: 3-1:2 info: Logitech Unifying Receiver type: Keyboard,Mouse,HID
driver: logitech-djreceiver,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s
chip ID: 046d:c52b
Device-2: 3-2:3 info: Cambridge Silicon Radio Bluetooth Dongle (HCI mode)
type: Bluetooth driver: btusb interfaces: 2 rev: 2.0 speed: 12 Mb/s
chip ID: 0a12:0001
Hub-6: 4-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.0 speed: 5 Gb/s
chip ID: 1d6b:0003
Sensors:
System Temperatures: cpu: 29.8 C mobo: 27.8 C
Fan Speeds (RPM): N/A
Info:
Processes: 179 Uptime: 57m wakeups: 12 Init: systemd v: 247 Compilers:
gcc: 10.2.0 Packages: 1301 pacman: 1295 lib: 390 flatpak: 6 Shell: Bash
v: 5.1.0 running in: yakuake inxi: 3.2.02
$ echo 10 | sudo tee /sys/class/backlight/acpi_video0/brightness
[sudo] passord for jonas:
10
$ grep GRUB_CMDLINE_LINUX_DEFAULT /etc/default/grub
GRUB_CMDLINE_LINUX_DEFAULT="quiet apparmor=1 security=apparmor udev.log_priority=3"
Fabby
29 May 2021 08:20
9
I’m not expecting you to be if you don’t want to, but at least I’m expecting you to provide the information requested:
Easy to miss at the bottom, took me a while to realise it was there.
Fabby
29 May 2021 20:02
12
This didn’t change the brightness?
If no,
add acpi_backlight=vendor
to the end of the line GRUB_CMDLINE_LINUX_DEFAULT="quiet apparmor=1 security=apparmor udev.log_priority=3
in file /etc/default/grub
Reboot
Try again.
If yes: don’t do the above and shout out.
Jonas
29 May 2021 22:12
13
Thanks! I did all the steps. Unfortunately it still doesn’t work.
Fabby
30 May 2021 07:00
14
I won’t be able to help you any further then, sorry!