[SOLVED] laptops backlight not powering on after suspend

I'm on the g+ arch community, it seems that a few of us there have an issue with our laptops not waking from suspend, and I've seen a few issues like this, here, on the arch forum.
http://pastebin.com/eXebMFTy
This is my dmesg after the said issue occurs...
I'm on an intel macbook 4,1 with kernel 3.15.1-1-ARCH.
I looked at the arch wiki page about backlights, and it said that I could get info on my backlight drivers at /sys/class/backlight. I'm guessing that since using intel graphics drivers, I should have a directory there called intel-backlight, or intel-dri, or something, but it's empty. This doesn't seem kosher... and it seems that a lot of us on the g+ community are using intel drivers, and this started happening for me after/around-the-same-time-as I did a pacman -Syu that upgraded my intel-dri and xf86-video-intel.
Last edited by comapony (2014-07-15 22:55:31)

R00KIE wrote:You first have to determine if the machine really doesn't wake up or if it wakes up but you don't see anything on the screen.
Sorry, I should've mentioned that, yes, it's just the backlight. If I take a flashlight the to the screen, I can see stuff there, and I can see stuff changing if I were to start scrolling, mashing buttons, et cetera. I can ssh to the machine in question and restart it, I also tried 'xset dpms force on' over ssh, but it fails because it says the display isn't recognized, even if I set DISPLAY manually. Before a suspend, I'm able to 'xset force dpms off && sleep 5 && xset force dpms on' successfully.
Rexilion wrote:Did this ever work on another kernel version?
I upgraded to 3.15.2-1-ARCH last night, it didn't have any effect. I'll try a downgrade tonight, and I'll check my pacman.log to see if I had a kernel upgrade around-the-same-time-as the backlight started fucking up.

Similar Messages

  • [SOLVED]: APM changes 'off' to '128' after suspend/hibernation

    Well, here I'am again experiencing weird behaviour of the HDDs APM setting:
    On first boot after fresh install everything was fine:
    #smartctl -x /dev/sdb | grep APM
    APM level is: disabled
    That is (or was?) the default setting until now.
    # in fact, it itn't. The APM default, if the settings persist or if they are restored to default after power on depends on the manufacturer.
    Because sometimes, without further reason on reboot or restart or sometimes just after a while working suddenly I start hearing this annoying 'klack'-'klack'-'klack', Load_Cycle_Count starts rising per second (yes, it's a WD3200BEVT)  and APM suddenly is set back to 128 (minimum power consumption without standby).
    No entrys according to a change to apm in any log files and I didn't cange anything about this!
    There is no power management installed, no laptop-mode-tools, nothing that could change apm settings! It's a clean and fresh install.
    Edit I: 'Solved' this by complete reinstallation. Now APM stays off.
    Seems like if you ever had hdparm on your system installed, APM default changes from 'off' to '128'. #nonsense
    Edit Ia: It's a WD thing! Neither my Hitachi nor my Samsung HDDs show such behaviour!
    Edit II: Cheered too soon! Problem persists!
    Also with tested and proper working udev rule which sets APM to 255 at boot APM value switches always back to 128 after suspend/hibernation.
    How can I stop this weird behaviour?  # look downwards
    What is responsible for changing APM level? # WD-Firmware
    How can I even prevent APM level change after standby? (of course, it switches always back to 128...)  # look downwards
    Drive Information:
    Model Family: Western Digital Scorpio Blue Serial ATA
    Device Model: WDC WD3200BEVT-24A
    Firmware Version: 01.01A02
    User Capacity: 320.072.933.376 bytes [320 GB]
    Sector Size: 512 bytes logical/physical
    Rotation Rate: 5400 rpm
    ATA Version is: ATA8-ACS (minor revision not indicated)
    SATA Version is: SATA 2.6, 3.0 Gb/s
    SMART support is: Available - device has SMART capability.
    SMART support is: Enabled
    AAM level is: 128 (quiet), recommended: 128
    APM feature is: Disabled # but will soon change...
    Rd look-ahead is: Enabled
    Write cache is: Enabled
    ATA Security is: Disabled, frozen [SEC2]
    Edit III:
    Also there is a bug report for changing any values by systemd without notice respectively not restoring them on wakeup.
    I disagree for it is definitive a WD firmware bug:
    While the APM level is reset to 128 after every power on/off the AAM (hdparm -M) level setting keeps unchanged.
    This is totally inconsistend behaviour.
    Edit VI:
    I found a solution by myself!
    A real 'kiss' one without necessary to install sth. or study udev rules:
    # man systemd-suspend.service says:
    Immediately before entering system suspend and/or hibernation systemd-suspend.service (and the other mentioned units, respectively)
    will run all executables in /usr/lib/systemd/system-sleep/ and pass two arguments to them...
    Immediately after leaving system suspend and/or hibernation the same executables are run...
    so I just created:
    # vi /usr/lib/systemd/system-sleep/hdparm_set
    #!/bin/sh
    hdparm -B255 /dev/sda
    than:
    # chmod +x /usr/lib/systemd/system-sleep/hdparm_set
    and APM after wakeup from suspend is off!
    Last edited by renegat (2013-03-10 02:06:38)

    Thank you, it works perfectly!

  • [SOLVED]Will WOL ever work again after suspend to RAM on my server?

    I used Ubuntu on this server for a long while and had WOL working after 'suspend to RAM' and after a 'shutdown -h'. Suddenly with 10.10 WOL after 'suspend to RAM' stopped working, WOL after 'shutdown -h' was still working fine, so I used that for the time being. Some days ago I thought, "well, you use Arch on your laptop for years now, so why not try it on your server, you don't like fixed release cycles anyway and Samba on Ubuntu never worked reliably on this machine, too'. So after a little fiddling to install Arch on this server and following the pm-utils entry on the Arch Wiki I am now at exactly the same position as before, WOL after 'suspend to RAM' doesn't work while WOL after a 'shutdown -h' works. The funny thing is that if I stop the network service before calling 'pm-suspend' on the server directly I can wake it with a WOL command from my laptop. I checked (via ethtool) and saw that disabling the network actually leaves the wol flag for the network card on g, but starting the network service again sets it to d. I have read many howtos and forum posts, but am at a loss right now.
    Does anyone have hints or an idea to where to look now?
    EDIT: Oh man, could this have really been so easy?
    It turns out that I simply need to stop the network service at suspend and start it again at resume, I don't even need to unload the driver module of my network card, doh. What put me off track were all my previous attempts under Ubuntu where I had tried the same thing following provided means (trough acpi) of the distro, seems I messed up there or the documentation was out of date. I now just created a hook completely myself following the Arch documentation for pm-utils and it works now!
    [root@archi ~]# cat /etc/pm/sleep.d/Start_and_stop_network_service
    #!/bin/bash
    case $1 in
    hibernate)
    echo "You didn't really call hibernate?"
    suspend)
    echo "Stop the network service"
    /etc/rc.d/network stop;
    thaw)
    echo "oh, suspend to disk is over, we are resuming..."
    resume)
    echo "Start the network service again"
    /etc/rc.d/network start;
    /usr/sbin/ethtool -s eth0 wol g;
    *) echo "somebody is calling me totally wrong."
    esac
    I also have to re-enable wol in the script, and at a cold boot I do the same through '/etc/rc.local'.
    Last edited by signor_rossi (2011-05-10 19:44:07)

    I agree iMessage is the worst thing Apple have done! Took me 3 days to work out why my text messages were not being sent, more oddly, text message were apearing on my Ipad whcih is is not the 3g model! just switch it off insettings. Other than the iOS 7 is pretty good!

  • Laptop is not powering on wihout battery and with battery

    Hi All,
    I have Presario CQ 40-327 TU Laptop and i've been using this since 2009. My lap's batterry is almost dead and not charging up.When i try to poer on my lap it was not powering up. So i removed the battery and plugged in the power cable and tried again but it didn't. What is the reason behind this? Though the battry is removed, it should power on with the charger cable but the same is not happening in my case?Help me out

    Thanks for the reply and suggestion.
    Finally i have told to replace the battery and adaptor. I've asked them to send me quotation. The quotation as follows.
    1 BATTERY (10.8 V = 47Wh)- CQ 40 NOTEBOOK - Make ORG OEM - 1YEAR WARRANTY 1   INR 4000.00
    2 ADAPTER Smart pin- CQ 40 NOTEBOOK - Make- HP - 1YEAR WARRANTY 1   INR 2300.00
    3 RAM 4 GB DDR 2- CQ 40 NOTEBOOK - Make – Hynix - 1 YEAR WARRANTY   INR  5900.00
    * Rates ara in INR (Rupees)
    I feel cost is very high!! What will be the cost normally? Why the costs are so high? 4 GB RAM is 5900 Rupees(\INR)??
    Shall i go ahead with this or not?? I guess the cost is $71,$31 and $105 respectively.
    Please help me out!

  • Audible file starts at beginning when Zen XTRA 40gb is not powered on after about 24

    I don't know if this is the case for everyone, but my Zen XTRA, if it is not powered on for more than 24 hours, it seems the memory is reset and does a cold boot from the Creative logo screen, and when I play my Audible file, instead of playing from where it left off before the power off, it plays from the beginning. If I don't bookmark before I power off, and don't use my player for over 24hours, I have to manually forward to where I last left off in my audible program.
    It's kind of an annoyance. I wonder if it's only my player, or if other players are having the same problem.
    Deli'verator

    Just so you know, I have the same problem with my Zen Xtra and found your post looking for a solution. Yes, it's a pain, and I wish I had an answer. If you find a fix (the bookmark workaround seems reasonable in the short term), please post it here. I'll do the same. Good luck.

  • [SOLVED] KDE black screen on resume after suspend

    Yesterday I wasted the day investigating this and at the end the problem was not suspending the computer but the KDE lock screen as explained here. I thought to open a new thread so other people would not wasted their time looking into the wrong issue as I did.
    Anyway, this is what happens, when KDE resumes, it only displays a black screen and the mouse pointer. The problem appears only when the system suspends through KDE (through the menu, the global shortcut or closing the laptop lid), suspending the system directly through systemd (systemctl suspend) or dbus (qdbus --system org.freedesktop.login1 /org/freedesktop/login1 org.freedesktop.login1.Manager.Suspend true) works fine.
    The way to recover is to kill kdm (ctrl+atl+backspace) or to restart kdm (switch to a terminal and execute systemctl restart kdm) .
    As explained in the post #12 of this thread,  if you use a transparent widget style (I use Oxygen Transparent) you have to add the lock screen to the background opacity exception list, for that go to:
    System Settings ->   Application Appearance ->  Style -> Applications -> Configure … (to the right of 'Widget style') ->  General -> Exceptions...
    And select  both "kscreenlocker" and "kscreenlocker_greet", if they do not exist add them through the 'Add' button.
    Last edited by thepadawan42 (2013-07-20 08:43:33)

    Hi,
    I am also having this issue. After resuming from suspend-mode, I get a black screen with a mouse-cursor. I can follow you instructions up until "-> General". I don't see an "Exceptions"-button/area where I can select the kscreenlocker exceptions. Can you help?

  • My hp p017tu laptop is not shutting down after upgrading to windows10

    I recently upgraded my os to windows 10 from 8.1 .After that When I tried shuttig down, the screen light turned off bt the power light was still on and the processing fan was still running inside ..After 3 hours when the battery was zero the power light turned off. after that when ever I started my laptop Ihad tu physically turn off by long pressing power button..,Having a lot problemsI don't want to go back to 8.1Help me find a solution..(all the drivers are updated)(HP P017TU)

    Hi Prysci,
    Thank you for visiting the HP Support Forums and Welcome. I have read your thread on your HP Pavilion dm4-2015dx Entertainment Notebook PC and the power off button not working correctly.  Here is a link to update the BIOS. I have researched this with Microsoft and the update should resolve this issue for you. Make sure after the update you restart the Notebook and check for updates.  I recommend using the HP Support Assistant on a regularly scheduled basis. Use this tool to keep your computer tuned up and updates to software and drivers. If you need the HP Support Assistant download follow the link.
    Hope this helps.
    Thanks.
    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos, Thumbs Up" on the bottom to say “Thanks” for helping!

  • L755 Backlight not coming on after sleeping

    We got a new L755 laptop and seince we got it, its doing a strange thing.  When the computer wakes from sleeping, the backlight doesnt come on, but when the computer powers on from being off, it works perfectly.  A little googling hasent turned up anyone else with this problem, so does anyone have an ideas/soloutions?
    Thanks in advance!

    I would make sure your using the latest BIOS; that would be the first place I would check.
    ========================================================
    QOSMIO - x505 q8102X
    i7-2630QM , GTX 460m , 18.4" screen @ 1680x945p

  • [Solved]Laptop does not start (not even bios)

    Hi all,
    I was about to install archlinux on my laptop. When I generate partitions (I used GPT), I saw something like this:
    "If you have a BIOS motherboard (or plan on booting in BIOS compatibility mode) and you want to setup GRUB on a GPT-partitioned drive, you will need to create an extra BIOS Boot Partition of size 1 or 2 MiB and EF02 type code. Syslinux does not need one."
    So, I was planning to make this. When I run cgdisk, I was that lthere was a 1007kb unusued(?) space. So I thought I can use this space for boot sector. Then I changed its type to EF02. When I did this, my laptop shutted down quickly and does not start again. When I press the power up button; I hear the usual starting noise, and then it shuts down again.
    What did I do to my laptop?
    What I tried:
    Remove battery, wait for 5 minutes, try again
    Remove hdd, try again
    Unplug&plug bios battery, try again
    Edit: Solved with a shame. Wall-charger was unplugged. This topic can be removed.
    Last edited by firatakandere (2013-12-24 17:09:56)

    firatakandere wrote:Wall-charger was unplugged. This topic can be removed.
    Why?  Others may learn for your experience
    Welcome to Arch Linux.

  • Why BarTab extension is working perfectly (even thought it shouldn't!) on my laptop, but not my desktop, after updating to version 4.0?

    After updating my Firefox to version 4.0 on my desktop (Windows 7 Ultimate 64-bit) I was told BarTab is not available for FF 4, and it was disabled and no way to enable it, so I uninstalled it.
    However, after updating my laptop (Windows XP Professional SP2 32-bit) to the same version, I was surprised, because it was enabled and working fine.

    After updating my Firefox to version 4.0 on my desktop (Windows 7 Ultimate 64-bit) I was told BarTab is not available for FF 4, and it was disabled and no way to enable it, so I uninstalled it.
    However, after updating my laptop (Windows XP Professional SP2 32-bit) to the same version, I was surprised, because it was enabled and working fine.

  • PC not powering off after shutdown? (FIXED!)

    Hi All,
    I recently reloaded the OS (XP-Pro) on my machine and now the machine doesn't power off after I shut it down.  Everything terminates and my panels go to sleep but the power supply stays on indefinitely (or at least longer than I'm willing to wait, which is many many minutes).  I end up needing to hold the power switch for 5 seconds to get it to shut off. Anyone ever experience this kind of problem? I'll be happy to provide any other details that might be useful. I'm using the latest BIOS (1.b) and NVidia/SiliconImage controller drivers from the MSI support site.  I have a feeling it's related to the new BIOS/drivers since everything worked just fine prior to the update.
    I ended up updating my BIOS from 1.5 to 1.b because I was experiencing the dread "BSOD after loading mup.sys while installing XP-Pro" problem when trying to reinstall the OS (I tried about 12 times).  Updating the BIOS to 1.b solved that issue.  I was also interested in updating the BIOS to fix the "missing second CPU" issue that I started to experience when doing some mild OC'ing. 
    Only reason for reinstalling the OS in the first place was because on the original install somehow decided to boot from my RAID-0 D: drive even though the OS was installed in the C: drive.  The three bootfiles (boot.ini, ntldr, and ntdetect.com) were located on D:, everything else was on C:  Since D: is a RAID-0 scratch drive I didn't want the system suceptible to a failure on that drive as well as the C: (which was RAID-0 at the time, but is now RAID-1)
    Thanks,
    Kevin

    Good thought.  And intersting results.  When I boot into safe mode and shut down the system get stuck on the "Windows is shutting down..." screen indefinitely.  Also noted that "Restart" doesn't work either.
    Ah Ha!!! I just figured it out.  I just downloaded and installed the latest NForce4 AMD Drivers from NVidia, installed them, restarted (with the help of the 5 second power button), then shutdown and it worked.  I'd almost swear that I did this yesterday, but I guess not.  There was a lot of DL'ing of drivers and such during this re-install.
    Thanks for the help...hope this helps someone else in the future.

  • MBP - not powering up after Apple replaced battery

    My mid-2009 17" MBP went dark dramatically this AM while I was using it.  There was a crackle and a puff of smoke!! It look like the wisp of smoke was coming up from the power port (the computer was plugged in).  No liquids involved at all. Laptop had been in use for about an hour before this happened.  Now it won't start up - although if I wait a little while and then try, it starts to start up, but goes dark again after showing the apple (and before getting to the login screen).  This laptop is out of Apple Care but it had the swollen battery issue which I paid to replace at the Apple Store. They installed the new battery.  The powercord is plugged into a surge protector and that is doing fine (it wasn't tripped). Nothing else in house or plugged into that surge protector "surged", so I think this is a local issue (local to the laptop itself).   The power cord does not show an indicator light (the light is dark) when I plug it back in (yes, I did this despite my trepidation, to try to rescue some files to a disc).
    I will be taking it to the Apple Store today (the same folks who replaced the  battery) - and I am wondering if the two could be related in any way. The battery was replaced months ago - how long is that warrantied? The issue does seem to be with the power port BUT shouldn't the battery be working to start it up again? The brief startup then flickering off seems to suggest that there is not power in the laptop. If the battery failed, shouldn't it be covered by Apple?
    Has anyone had this happen before? I know that the computer is a few years old (I got it new in 2010), but should parts of it be swelling up and sparking and emitting smoke?  I am a longstanding Apple user and I have never had serious hardware issues like this - a logic board failure here and there, but nothing so strange as this.
    And did I mention, ARGH?
    Any help/comments welcome.
    Thanks - Liese

    Thanks, guys. I took it to the Genius and indeed the battery is not working. He replaced the fried cable (down to the brick) at no charge, said they'd replace the battery at no charge, and is keeping it overnight for tests.  Sigh.  I am wondering if it's a message telling me to get a new laptop, but I just upgraded the RAM and replaced the HD with an SSD in hopes of prolonging this one's life.  I like the 17" screen and the thing is really working very well otherwise. Other than the puff of smoke that is.
    Not sure how I got a bad battery from Apple, but that seems to have been the case. Sigh.
    'Preciate your cheery words!  Fingers crossed that the behemoth comes through the "testing" well...

  • Keyboard backlight not working correctly after leopard update

    My mbp originally came with Tiger (10.4), when Leopard (10.5) was released I updated. The backlight for the keyboard works normally until I installed the 10.5.1 update. After 10.5.1 and all other updates the keyboard backlight no longer worked correctly. In low light conditions or while working in the dark I have to manually turn it on instead of it doing it automatically. Is this a bug or is there a way to fix it?

    Yes, I have to cover the sensors with my hands in order for them to turn off when light is back on, otherwise they just stay on.

  • Backlight not coming on after call ended and phone returned to horizontal

    Hi all. As from the title, the Iphone would not lit the backligt and get ready for use after ending the call, while the screen has gone to "sleep" and is beeing tiled down to horizontal position to be used...
    I have to touch the Main button to keep usiong it.
    Most of all I need is confirmation it is about hardware issue. Setting are o.k.
    Looking forward for your experiences.
    Cheers...

    Another thing to look at. Did you initiate the call? If not, was the phone locked when you received the call. If the phone was locked when you received the call, then the phone will relock when the call is over. This is normal operation.
    If you initiated the call and when you end it the phone goes dark, then that is not normal operation. Check what the previous poster said, and if necessary, go through the troubleshooting procedures, power phone off/on, reset, restore from backup or as new phone. Go as far as needed in the troubleshooting until the phone functions normally.

  • [SOLVED] Gnome does not mount ipod after system upgrade

    I did a system upgrade today (2009.12.04) and now gnome does not mount my ipod video (gnome used to mount the ipod without problems before de upgrade).
    Here is some information about the system messages:
    Last lines of the output of dmesg before plugging the ipod:
    wlan0: associated
    ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
    wlan0: no IPv6 routers present
    After plugging it:
    wlan0: associated
    ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
    wlan0: no IPv6 routers present
    usb 1-4: new high speed USB device using ehci_hcd and address 3
    usb 1-4: configuration #1 chosen from 2 choices
    Initializing USB Mass Storage driver...
    scsi6 : SCSI emulation for USB Mass Storage devices
    usb-storage: device found at 3
    usb-storage: waiting for device to settle before scanning
    usbcore: registered new interface driver usb-storage
    USB Mass Storage support registered.
    usb 1-4: reset high speed USB device using ehci_hcd and address 3
    usb 1-4: reset high speed USB device using ehci_hcd and address 3
    usb 1-4: reset high speed USB device using ehci_hcd and address 3
    usb 1-4: reset high speed USB device using ehci_hcd and address 3
    usb 1-4: reset high speed USB device using ehci_hcd and address 3
    scsi 6:0:0:0: Device offlined - not ready after error recovery
    usb-storage: device scan complete
    The output of the lsusb command:
    [miguel@miguel ~]$ lsusb
    Bus 002 Device 002: ID 0408:030c Quanta Computer, Inc. HP Webcam
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 003 Device 002: ID 08ff:2580 AuthenTec, Inc. AES2501 Fingerprint Sensor
    Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
    Bus 001 Device 003: ID 05ac:1209 Apple, Inc. iPod Video
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    lsusb shows ipod is in Bus 001
    Any help?
    Many tks
    Last edited by mmf1902 (2009-12-29 04:42:11)

    Finally found the problem was the Ipod itself. After a soft reset everything worked again.

Maybe you are looking for