My notebook is a Sony Vaio VPCZ13M9, which has two graphic cards (hybrid graphics). I've set the VGA switching mode in the BIOS to STATIC, so I choose in the hardware button which graphics I want to use when powering on the computer. Currently I'm on the nVidia GeForce GT 330m
My ubuntu version is 16.04.1 LTS.
To control the screen brightness there's the Fn+F5 to decrease or Fn+F6 to increase it. When I press the combination, the slider appears moving in the corner of the screen, however the screen brightness doesn't change. The same happens if I change the brightness from System Preferences.
How can I fix this? Here's some output to help:
Code:
root@ubuntu:~# cat /proc/cmdline BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=efa3614c-4cb5-42ba-8eb3-e1c88afde1a6 ro --verbose nosplash debug
Code:
root@ubuntu:~# lspci -k | grep -A2 VGA
01:00.0 VGA compatible controller: NVIDIA Corporation GT216M [GeForce GT 330M] (rev a2)
Subsystem: Sony Corporation GT216M [GeForce GT 330M]
Kernel driver in use: nouveau
Code:
root@ubuntu:~# for interface in /sys/class/backlight/*; do echo $interface; cat $interface/max_brightness; cat $interface/actual_brightness; cat $interface/brightness; done /sys/class/backlight/acpi_video0 8 3 3 /sys/class/backlight/nv_backlight 100 70 70
Code:
root@ubuntu:~# lsmod Module Size Used by arc4 16384 2 iwldvm 233472 0 snd_hda_codec_hdmi 53248 4 intel_powerclamp 16384 0 uvcvideo 90112 0 mac80211 737280 1 iwldvm coretemp 16384 0 kvm_intel 172032 0 kvm 536576 1 kvm_intel videobuf2_vmalloc 16384 1 uvcvideo videobuf2_memops 16384 1 videobuf2_vmalloc videobuf2_v4l2 28672 1 uvcvideo irqbypass 16384 1 kvm videobuf2_core 36864 2 uvcvideo,videobuf2_v4l2 v4l2_common 16384 1 videobuf2_v4l2 videodev 176128 4 uvcvideo,v4l2_common,videobuf2_core,videobuf2_v4l2 media 24576 2 uvcvideo,videodev snd_hda_codec_realtek 86016 1 snd_hda_codec_generic 77824 1 snd_hda_codec_realtek joydev 20480 0 snd_hda_intel 36864 5 iwlwifi 200704 1 iwldvm input_leds 16384 0 snd_hda_codec 135168 4 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_intel snd_hda_core 73728 5 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel cfg80211 565248 3 iwlwifi,mac80211,iwldvm snd_hwdep 16384 1 snd_hda_codec serio_raw 16384 0 snd_pcm 106496 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_hda_core snd_seq_midi 16384 0 snd_seq_midi_event 16384 1 snd_seq_midi snd_rawmidi 32768 1 snd_seq_midi shpchp 36864 0 snd_seq 69632 2 snd_seq_midi_event,snd_seq_midi lpc_ich 24576 0 snd_seq_device 16384 3 snd_seq,snd_rawmidi,snd_seq_midi snd_timer 32768 2 snd_pcm,snd_seq snd 81920 21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec_generic,snd_hda_codec,snd_hda_intel,snd_seq_device mei_me 36864 0 soundcore 16384 1 snd mei 98304 1 mei_me mac_hid 16384 0 sony_laptop 61440 0 tpm_infineon 20480 0 parport_pc 32768 0 ppdev 20480 0 lp 20480 0 parport 49152 3 lp,ppdev,parport_pc autofs4 40960 2 dm_mirror 24576 0 dm_region_hash 24576 1 dm_mirror dm_log 20480 2 dm_region_hash,dm_mirror hid_logitech_hidpp 20480 0 hid_logitech_dj 20480 0 usbhid 49152 0 uas 24576 0 hid 118784 4 usbhid,hid_logitech_dj,hid_logitech_hidpp usb_storage 69632 4 uas nouveau 1495040 6 i2c_algo_bit 16384 1 nouveau ttm 94208 1 nouveau drm_kms_helper 147456 1 nouveau syscopyarea 16384 1 drm_kms_helper sysfillrect 16384 1 drm_kms_helper e1000e 237568 0 sysimgblt 16384 1 drm_kms_helper mxm_wmi 16384 1 nouveau fb_sys_fops 16384 1 drm_kms_helper ahci 36864 0 sdhci_pci 28672 0 ptp 20480 1 e1000e intel_ips 20480 0 sdhci 45056 1 sdhci_pci libahci 32768 1 ahci drm 360448 9 ttm,drm_kms_helper,nouveau psmouse 126976 0 pps_core 20480 1 ptp fjes 28672 0 video 40960 2 sony_laptop,nouveau wmi 20480 2 mxm_wmi,nouveau
Code:
root@ubuntu:~# pastebinit /var/log/Xorg.0.log
Sony Vaio VPC-Z13 Fn brightness keys and slider not working
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