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Thread: Asus x102ba screen brightness

  1. #11
    Join Date
    Jan 2008
    Beans
    588
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Asus x102ba screen brightness

    Hi. Sorry I have been late joining in today.

    Here's the commands again, with the proprietary drivers installed.

    First:
    Code:
    cat /proc/cmdline
    Code:
    BOOT_IMAGE=/boot/vmlinuz-3.11.0-18-generic root=UUID=82b24a0a-dc7d-4c36-8f59-bc562ce84833 ro quiet splash acopi_backlight=vendor nomodeset vt.handoff=7
    Second:
    Code:
    lspci -k | grep -iA2 VGA
    Code:
    00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kabini [Radeon HD 8180]
    	Subsystem: ASUSTeK Computer Inc. Device 141d
    	Kernel driver in use: fglrx_pci
    Third:
    Code:
    for interface in /sys/class/backlight/*; do echo -e "\n $interface"; cat $interface/{brightness,max_brightness,actual_brightness}; done
    Code:
     /sys/class/backlight/*
    cat: /sys/class/backlight/*/brightness: No such file or directory
    cat: /sys/class/backlight/*/max_brightness: No such file or directory
    cat: /sys/class/backlight/*/actual_brightness: No such file or directory
    Fourth:
    Code:
    lsmod
    Code:
    Module                  Size  Used by
    vesafb                 13828  1 
    amd_freq_sensitivity    12589  0 
    kvm_amd                59987  0 
    kvm                   431754  1 kvm_amd
    crct10dif_pclmul       14289  0 
    crc32_pclmul           13113  0 
    ghash_clmulni_intel    13259  0 
    aesni_intel            55624  0 
    aes_x86_64             17131  1 aesni_intel
    lrw                    13286  1 aesni_intel
    gf128mul               14951  1 lrw
    glue_helper            13990  1 aesni_intel
    ablk_helper            13597  1 aesni_intel
    cryptd                 20359  3 ghash_clmulni_intel,aesni_intel,ablk_helper
    joydev                 17377  0 
    parport_pc             32701  0 
    ppdev                  17671  0 
    asus_nb_wmi            16990  0 
    asus_wmi               24191  1 asus_nb_wmi
    sparse_keymap          13948  1 asus_wmi
    rfcomm                 69130  0 
    bnep                   19704  2 
    bluetooth             372041  10 bnep,rfcomm
    arc4                   12608  2 
    ath9k                 155779  0 
    hid_multitouch         17407  0 
    uvcvideo               80885  0 
    videobuf2_vmalloc      13216  1 uvcvideo
    ath9k_common           13859  1 ath9k
    videobuf2_memops       13362  1 videobuf2_vmalloc
    videobuf2_core         40499  1 uvcvideo
    videodev              133509  2 uvcvideo,videobuf2_core
    ath9k_hw              444732  2 ath9k_common,ath9k
    microcode              23656  0 
    ath                    23827  3 ath9k_common,ath9k,ath9k_hw
    snd_hda_codec_realtek    56475  1 
    mac80211              597268  1 ath9k
    snd_seq_midi           13324  0 
    snd_seq_midi_event     14899  1 snd_seq_midi
    snd_hda_codec_hdmi     41154  1 
    snd_rawmidi            30095  1 snd_seq_midi
    snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
    snd_hda_intel          52267  10 
    cfg80211              480503  3 ath,ath9k,mac80211
    psmouse                97655  0 
    snd_hda_codec         188738  3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
    k10temp                13126  0 
    edac_core              62342  0 
    edac_mce_amd           22617  0 
    serio_raw              13413  0 
    fam15h_power           13119  0 
    snd_hwdep              13602  1 snd_hda_codec
    snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
    snd_pcm               102033  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
    snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
    snd_timer              29433  2 snd_pcm,snd_seq
    i2c_piix4              22106  0 
    fglrx                6732964  166 
    wmi                    19070  1 asus_wmi
    snd                    69141  31 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
    video                  19318  1 asus_wmi
    mac_hid                13205  0 
    soundcore              12680  1 snd
    amd_iommu_v2           19054  1 fglrx
    lp                     17759  0 
    parport                42299  3 lp,ppdev,parport_pc
    usbhid                 53014  0 
    hid                   101762  2 hid_multitouch,usbhid
    sdhci_pci              18981  0 
    sdhci                  42898  1 sdhci_pci
    ahci                   25819  2 
    r8169                  67581  0 
    libahci                32009  1 ahci
    mii                    13934  1 r8169
    Finally:
    pastebinit /var/log/Xorg.0.log

    Now: There is something else interesting as well. Looking in the settings manager, using this proprietary driver has added an option called 'AMD catalyst Control Centre'. This has some fancy options, including brightness settings under the heading 'colour'. Here, brightness runs from -100 to 100 (default at 0). This doesn't seem to be 'brightness' as we would traditionally understand the term. i.e., it seems to toggle the gamma, rather than the brightness per se.
    'I know lifes a bummer baby, But thats got precious little to do with me' - Monster Magnet

  2. #12
    Join Date
    Jun 2005
    Location
    Toronto, Canada
    Beans
    Hidden!
    Distro
    Xubuntu 16.04 Xenial Xerus

    Re: Asus x102ba screen brightness

    Oops, you misspelled the parameter:
    BOOT_IMAGE=/boot/vmlinuz-3.11.0-18-generic root=UUID=82b24a0a-dc7d-4c36-8f59-bc562ce84833 ro quiet splash acopi_backlight=vendor nomodeset vt.handoff=7
    Can you try again? The parameter is acpi_backlight=vendor.


    And after you re-try that one, try this one as well: acpi_osi='!Windows 2012' (replacing acpi_backlight=vendor).


    In both cases, post back all results.

  3. #13
    Join Date
    Jan 2008
    Beans
    588
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Asus x102ba screen brightness

    Ooops! Pardon my stubby fingers! Let's try again:

    First:
    Code:
    cat /proc/cmdline
    Code:
    BOOT_IMAGE=/boot/vmlinuz-3.11.0-18-generic root=UUID=82b24a0a-dc7d-4c36-8f59-bc562ce84833 ro quiet splash acpi_backlight=vendor nomodeset vt.handoff=7
    Second:
    Code:
    lspci -k | grep -iA2 VGA
    Code:
    00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kabini [Radeon HD 8180]
    	Subsystem: ASUSTeK Computer Inc. Device 141d
    	Kernel driver in use: fglrx_pci
    Third:
    Code:
    for interface in /sys/class/backlight/*; do echo -e "\n $interface"; cat $interface/{brightness,max_brightness,actual_brightness}; done
    Code:
    /sys/class/backlight/asus-nb-wmi
    100
    100
    100
    Fourth:
    Code:
    lsmod
    Code:
    Module                  Size  Used by
    parport_pc             32701  0 
    ppdev                  17671  0 
    bnep                   19704  2 
    rfcomm                 69130  0 
    bluetooth             372041  10 bnep,rfcomm
    vesafb                 13828  1 
    amd_freq_sensitivity    12589  0 
    kvm_amd                59987  0 
    kvm                   431754  1 kvm_amd
    crct10dif_pclmul       14289  0 
    crc32_pclmul           13113  0 
    ghash_clmulni_intel    13259  0 
    aesni_intel            55624  0 
    aes_x86_64             17131  1 aesni_intel
    lrw                    13286  1 aesni_intel
    gf128mul               14951  1 lrw
    glue_helper            13990  1 aesni_intel
    joydev                 17377  0 
    asus_nb_wmi            16990  0 
    ablk_helper            13597  1 aesni_intel
    cryptd                 20359  3 ghash_clmulni_intel,aesni_intel,ablk_helper
    asus_wmi               24191  1 asus_nb_wmi
    fglrx                6732964  73 
    uvcvideo               80885  0 
    sparse_keymap          13948  1 asus_wmi
    videobuf2_vmalloc      13216  1 uvcvideo
    videobuf2_memops       13362  1 videobuf2_vmalloc
    arc4                   12608  2 
    videobuf2_core         40499  1 uvcvideo
    snd_hda_codec_realtek    56475  1 
    ath9k                 155779  0 
    snd_hda_codec_hdmi     41154  1 
    videodev              133509  2 uvcvideo,videobuf2_core
    ath9k_common           13859  1 ath9k
    ath9k_hw              444732  2 ath9k_common,ath9k
    snd_hda_intel          52267  5 
    hid_multitouch         17407  0 
    ath                    23827  3 ath9k_common,ath9k,ath9k_hw
    snd_hda_codec         188738  3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
    mac80211              597268  1 ath9k
    microcode              23656  0 
    snd_seq_midi           13324  0 
    snd_seq_midi_event     14899  1 snd_seq_midi
    cfg80211              480503  3 ath,ath9k,mac80211
    snd_rawmidi            30095  1 snd_seq_midi
    snd_hwdep              13602  1 snd_hda_codec
    edac_core              62342  0 
    psmouse                97655  0 
    snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
    snd_pcm               102033  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
    fam15h_power           13119  0 
    wmi                    19070  1 asus_wmi
    edac_mce_amd           22617  0 
    serio_raw              13413  0 
    k10temp                13126  0 
    i2c_piix4              22106  0 
    snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
    snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
    snd_timer              29433  2 snd_pcm,snd_seq
    snd                    69141  21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
    soundcore              12680  1 snd
    amd_iommu_v2           19054  1 fglrx
    video                  19318  1 asus_wmi
    mac_hid                13205  0 
    lp                     17759  0 
    parport                42299  3 lp,ppdev,parport_pc
    usb_storage            62062  0 
    usbhid                 53014  0 
    hid                   101762  2 hid_multitouch,usbhid
    sdhci_pci              18981  0 
    ahci                   25819  2 
    r8169                  67581  0 
    sdhci                  42898  1 sdhci_pci
    libahci                32009  1 ahci
    mii                    13934  1 r8169
    And finally,
    pastebinit /var/log/Xorg.0.log

    And gimme a mo and I'l try the other version. Looks like something changed here though! Feels like progress! ^_^
    'I know lifes a bummer baby, But thats got precious little to do with me' - Monster Magnet

  4. #14
    Join Date
    Jan 2008
    Beans
    588
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Asus x102ba screen brightness

    Ok, and with the acpi_osi='!Windows 2012' the commands result in the following:

    First:
    Code:
    cat /proc/cmdline
    Code:
    BOOT_IMAGE=/boot/vmlinuz-3.11.0-18-generic root=UUID=82b24a0a-dc7d-4c36-8f59-bc562ce84833 ro quiet splash "acpi_osi=!Windows 2012" nomodeset vt.handoff=7
    Second:
    Code:
    lspci -k | grep -iA2 VGA
    Code:
    00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kabini [Radeon HD 8180]
    	Subsystem: ASUSTeK Computer Inc. Device 141d
    	Kernel driver in use: fglrx_pci
    Third:
    Code:
    for interface in /sys/class/backlight/*; do echo -e "\n $interface"; cat $interface/{brightness,max_brightness,actual_brightness}; done
    Code:
     /sys/class/backlight/*
    cat: /sys/class/backlight/*/brightness: No such file or directory
    cat: /sys/class/backlight/*/max_brightness: No such file or directory
    cat: /sys/class/backlight/*/actual_brightness: No such file or directory
    Fourth:
    Code:
    lsmod
    Code:
    Module                  Size  Used by
    vesafb                 13828  1 
    amd_freq_sensitivity    12589  0 
    kvm_amd                59987  0 
    kvm                   431754  1 kvm_amd
    crct10dif_pclmul       14289  0 
    crc32_pclmul           13113  0 
    ghash_clmulni_intel    13259  0 
    aesni_intel            55624  0 
    aes_x86_64             17131  1 aesni_intel
    lrw                    13286  1 aesni_intel
    gf128mul               14951  1 lrw
    glue_helper            13990  1 aesni_intel
    ablk_helper            13597  1 aesni_intel
    cryptd                 20359  3 ghash_clmulni_intel,aesni_intel,ablk_helper
    joydev                 17377  0 
    asus_nb_wmi            16990  0 
    parport_pc             32701  0 
    asus_wmi               24191  1 asus_nb_wmi
    ppdev                  17671  0 
    sparse_keymap          13948  1 asus_wmi
    snd_hda_codec_realtek    56475  1 
    uvcvideo               80885  0 
    snd_hda_codec_hdmi     41154  1 
    videobuf2_vmalloc      13216  1 uvcvideo
    rfcomm                 69130  0 
    videobuf2_memops       13362  1 videobuf2_vmalloc
    snd_hda_intel          52267  5 
    bnep                   19704  2 
    bluetooth             372041  10 bnep,rfcomm
    videobuf2_core         40499  1 uvcvideo
    snd_seq_midi           13324  0 
    snd_seq_midi_event     14899  1 snd_seq_midi
    arc4                   12608  2 
    snd_hda_codec         188738  3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
    videodev              133509  2 uvcvideo,videobuf2_core
    snd_rawmidi            30095  1 snd_seq_midi
    hid_multitouch         17407  0 
    ath9k                 155779  0 
    snd_hwdep              13602  1 snd_hda_codec
    ath9k_common           13859  1 ath9k
    microcode              23656  0 
    ath9k_hw              444732  2 ath9k_common,ath9k
    snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
    ath                    23827  3 ath9k_common,ath9k,ath9k_hw
    mac80211              597268  1 ath9k
    snd_pcm               102033  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
    psmouse                97655  0 
    snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
    snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
    serio_raw              13413  0 
    edac_core              62342  0 
    k10temp                13126  0 
    snd_timer              29433  2 snd_pcm,snd_seq
    edac_mce_amd           22617  0 
    fam15h_power           13119  0 
    cfg80211              480503  3 ath,ath9k,mac80211
    i2c_piix4              22106  0 
    fglrx                6732964  62 
    snd                    69141  21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
    soundcore              12680  1 snd
    amd_iommu_v2           19054  1 fglrx
    wmi                    19070  1 asus_wmi
    video                  19318  1 asus_wmi
    mac_hid                13205  0 
    lp                     17759  0 
    parport                42299  3 lp,ppdev,parport_pc
    usbhid                 53014  0 
    hid                   101762  2 hid_multitouch,usbhid
    sdhci_pci              18981  0 
    sdhci                  42898  1 sdhci_pci
    ahci                   25819  2 
    r8169                  67581  0 
    libahci                32009  1 ahci
    mii                    13934  1 r8169
    Finally:
    pastebinit /var/log/Xorg.0.log

    Thanks!
    'I know lifes a bummer baby, But thats got precious little to do with me' - Monster Magnet

  5. #15
    Join Date
    Jun 2005
    Location
    Toronto, Canada
    Beans
    Hidden!
    Distro
    Xubuntu 16.04 Xenial Xerus

    Re: Asus x102ba screen brightness

    Quote Originally Posted by bryncoles View Post
    Ooops! Pardon my stubby fingers! Let's try again:

    First:
    Code:
    cat /proc/cmdline
    Code:
    BOOT_IMAGE=/boot/vmlinuz-3.11.0-18-generic root=UUID=82b24a0a-dc7d-4c36-8f59-bc562ce84833 ro quiet splash acpi_backlight=vendor nomodeset vt.handoff=7
    Second:
    Code:
    lspci -k | grep -iA2 VGA
    Code:
    00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Kabini [Radeon HD 8180]
    	Subsystem: ASUSTeK Computer Inc. Device 141d
    	Kernel driver in use: fglrx_pci
    Third:
    Code:
    for interface in /sys/class/backlight/*; do echo -e "\n $interface"; cat $interface/{brightness,max_brightness,actual_brightness}; done
    Code:
    /sys/class/backlight/asus-nb-wmi
    100
    100
    100
    Fourth:
    Code:
    lsmod
    Code:
    Module                  Size  Used by
    parport_pc             32701  0 
    ppdev                  17671  0 
    bnep                   19704  2 
    rfcomm                 69130  0 
    bluetooth             372041  10 bnep,rfcomm
    vesafb                 13828  1 
    amd_freq_sensitivity    12589  0 
    kvm_amd                59987  0 
    kvm                   431754  1 kvm_amd
    crct10dif_pclmul       14289  0 
    crc32_pclmul           13113  0 
    ghash_clmulni_intel    13259  0 
    aesni_intel            55624  0 
    aes_x86_64             17131  1 aesni_intel
    lrw                    13286  1 aesni_intel
    gf128mul               14951  1 lrw
    glue_helper            13990  1 aesni_intel
    joydev                 17377  0 
    asus_nb_wmi            16990  0 
    ablk_helper            13597  1 aesni_intel
    cryptd                 20359  3 ghash_clmulni_intel,aesni_intel,ablk_helper
    asus_wmi               24191  1 asus_nb_wmi
    fglrx                6732964  73 
    uvcvideo               80885  0 
    sparse_keymap          13948  1 asus_wmi
    videobuf2_vmalloc      13216  1 uvcvideo
    videobuf2_memops       13362  1 videobuf2_vmalloc
    arc4                   12608  2 
    videobuf2_core         40499  1 uvcvideo
    snd_hda_codec_realtek    56475  1 
    ath9k                 155779  0 
    snd_hda_codec_hdmi     41154  1 
    videodev              133509  2 uvcvideo,videobuf2_core
    ath9k_common           13859  1 ath9k
    ath9k_hw              444732  2 ath9k_common,ath9k
    snd_hda_intel          52267  5 
    hid_multitouch         17407  0 
    ath                    23827  3 ath9k_common,ath9k,ath9k_hw
    snd_hda_codec         188738  3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel
    mac80211              597268  1 ath9k
    microcode              23656  0 
    snd_seq_midi           13324  0 
    snd_seq_midi_event     14899  1 snd_seq_midi
    cfg80211              480503  3 ath,ath9k,mac80211
    snd_rawmidi            30095  1 snd_seq_midi
    snd_hwdep              13602  1 snd_hda_codec
    edac_core              62342  0 
    psmouse                97655  0 
    snd_seq                61560  2 snd_seq_midi_event,snd_seq_midi
    snd_pcm               102033  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
    fam15h_power           13119  0 
    wmi                    19070  1 asus_wmi
    edac_mce_amd           22617  0 
    serio_raw              13413  0 
    k10temp                13126  0 
    i2c_piix4              22106  0 
    snd_page_alloc         18710  2 snd_pcm,snd_hda_intel
    snd_seq_device         14497  3 snd_seq,snd_rawmidi,snd_seq_midi
    snd_timer              29433  2 snd_pcm,snd_seq
    snd                    69141  21 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device,snd_seq_midi
    soundcore              12680  1 snd
    amd_iommu_v2           19054  1 fglrx
    video                  19318  1 asus_wmi
    mac_hid                13205  0 
    lp                     17759  0 
    parport                42299  3 lp,ppdev,parport_pc
    usb_storage            62062  0 
    usbhid                 53014  0 
    hid                   101762  2 hid_multitouch,usbhid
    sdhci_pci              18981  0 
    ahci                   25819  2 
    r8169                  67581  0 
    sdhci                  42898  1 sdhci_pci
    libahci                32009  1 ahci
    mii                    13934  1 r8169
    And finally,
    pastebinit /var/log/Xorg.0.log

    And gimme a mo and I'l try the other version. Looks like something changed here though! Feels like progress! ^_^
    Good. acpi_backlight=vendor exposes a backlight interface for you (/sys/class/backlight/asus-nb-wmi). Can you try these commands to see if you can manually affect brightness:
    Code:
    echo 50 | sudo tee /sys/class/backlight/asus-nb-wmi/brightness
    echo 75 | sudo tee /sys/class/backlight/asus-nb-wmi/brightness
    echo 100 | sudo tee /sys/class/backlight/asus-nb-wmi/brightness
    If it works, check your function keys to see if they can adjust the brightness as well.

  6. #16
    Join Date
    Jan 2008
    Beans
    588
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Asus x102ba screen brightness

    Ok, soi I tried all three commands

    Code:
    echo 50 | sudo tee /sys/class/backlight/asus-nb-wmi/brightness
    echo 75 | sudo tee /sys/class/backlight/asus-nb-wmi/brightness
    echo 100 | sudo tee /sys/class/backlight/asus-nb-wmi/brightness
    But to no effect. I cannot at this time affect brightness. Boo!

    So, what to try next?
    'I know lifes a bummer baby, But thats got precious little to do with me' - Monster Magnet

  7. #17
    Join Date
    Jun 2005
    Location
    Toronto, Canada
    Beans
    Hidden!
    Distro
    Xubuntu 16.04 Xenial Xerus

    Re: Asus x102ba screen brightness

    That's unfortunate. Found this entry about your laptop, where the author states that brightness appears to be broken, yet fixed in newer versions of the catalyst driver (which unfortunately breaks suspend). Perhaps its best to create a bug report for this.

  8. #18
    Join Date
    Jan 2008
    Beans
    588
    Distro
    Xubuntu 12.04 Precise Pangolin

    Re: Asus x102ba screen brightness

    Hi Toz.

    Aw, boo! So, we hit the wall. Still, the good news is we found out where the wall was, and how hard to run at it ^_^.

    So, but report is created. Thanks for your efforts here -- hopefully the bug will be resolved soon!
    'I know lifes a bummer baby, But thats got precious little to do with me' - Monster Magnet

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