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Thread: Samsung Series 7 - glitch in suspend/hibernate

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  1. #1
    Join Date
    Jul 2009
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    38
    Distro
    Ubuntu 12.04 Precise Pangolin

    Samsung Series 7 - glitch in suspend/hibernate

    I am running 12.04 on Samsung Series 7 17.3" Notebook (NP700Z7C-S01US). I am using the fix for suspend posted here. It seems to work ok except that suspending disables my wireless. I cannot re-enable it, and have to reboot the computer to get it back.
    Does anyone have any help for advice for me?

  2. #2
    Join Date
    Sep 2012
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    1

    Re: Samsung Series 7 - glitch in suspend/hibernate

    Hi clockworktri, I have the same laptop but I cant install ubuntu, could you please tell me how you did it??
    I tried installing from USB and CD version 12.04 and it didnt work. I got to it to work using wubi but after a few restarts it wont load any more.

    PLEASE help me.
    Best regards,
    Mauricio

    PS. Sorry for the spelling english is not my first language

  3. #3
    Join Date
    Jun 2007
    Beans
    5

    Re: Samsung Series 7 - glitch in suspend/hibernate

    I'm having the same problem. Have tried variou suspend fixes but just get more errors.

  4. #4
    Join Date
    Jul 2009
    Beans
    38
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Samsung Series 7 - glitch in suspend/hibernate

    Quote Originally Posted by mauricioDorame View Post
    Hi clockworktri, I have the same laptop but I cant install ubuntu, could you please tell me how you did it??
    I tried installing from USB and CD version 12.04 and it didnt work. I got to it to work using wubi but after a few restarts it wont load any more.

    PLEASE help me.
    Best regards,
    Mauricio

    PS. Sorry for the spelling english is not my first language
    I installed from CD, so I'm not sure why you couldn't. Only thing I can think to try is re-downloading the iso and burning a different copy. And maybe make sure you're hitting all the right steps? (http://howtoubuntu.org/how-to-instal...cise-pangolin/)

    As for getting the system to work once it's installed, I found this awesome guide:
    http://wiki.colar.net/ubuntu_12_04_o...chronos_laptop
    It has practically everything. For a few other tweaks I referred to these sites:
    http://openideals.org/2012/04/15/tun...ries-7-laptop/
    http://thecodecentral.com/2011/01/18...ot-working-bug
    http://bgrande.de/chronos7.html
    http://forum.notebookreview.com/sams...-np700z5b.html

    Just remember that the how-to guides (first and second links) are referring to an NP70035B-S01UB and NP700Z5B-S01U, respectively, which are 15.6" Series 7s. If you have the 17.3 inch, like me, you will have Nvidia Optimus instead of the ATI Radeon driver. So skip the steps referring to it, and instead install Bumblebee (follow the directions of the first poster here: http://askubuntu.com/questions/36930...a-optimus-work).

    I did have to do a clean install three or four times before I got the whole process right (may have been being over-careful there...) but it works fine now (except for this suspend issue). I'm liking it a lot!

    Good Luck!
    Last edited by clockworktri; September 15th, 2012 at 11:49 PM.

  5. #5
    Join Date
    Dec 2012
    Beans
    5

    Re: Samsung Series 7 - glitch in suspend/hibernate

    A very simple quide to install 12.10 on the Series 7 17" (NP700Z7C-S01UB - Best Buy model) since everything works out of the box:

    1. Replace the horribly slow HDD with the SSD (a must - they are cheap now).

    2. Unfortunately (not really) the OEM Windows 8 could not be transferred to the SSD due to some EFI boot issues and the distribution CD/DVD is not available at this time: brilliant on Microsoft's behalf. Dual boot s nice, but I doubt anyone would miss Windows 8 "innovations".

    2a. If you are installing Ubuntu on the original HDD (after shrinking the Windows partition), you will need to fix it, as Grub messes up Windows EFI initially. 100% automatic repair with Boot Repair tool (choose "Recommended repair") https://help.ubuntu.com/community/Boot-Repair

    Windows 7 is not EFI-compatible (didn't care to research more) and good luck downloading and installing proprietary Samsung drivers - the joys of non-OEM Windows installation. Not worth it IMO.

    2b. In any case disable the Secure Boot in BIOS (so it won't check against the oh so important OEM Windows signature), leave it at UEFI and change the boot sequence, so the CD boots first - doesn't really matter with an empty SSD, as it is not going to find any boot partitions there.

    3. SSD: wipe it completely deleting all old partitions.

    4. Boot from the Live DVD (in UEFI mode). When the installer asks you about partitioning, do the following ("Something else"):
    - sda1: 100M (I suspect size doesn't matter, but better safe than sorry) EFI boot partition
    - sda2: standard (Ext4?) partition for "/" - the rest of the SSD
    - sdb1 (8G "express cache"): swap partition
    Choosing the standard installation (whole disk) works too, but it won' utilize the little internal SSD as swap - a least initially.

    5. Everything works out of the box. Graphics even w/o Bumblebee. However Bumblebee greatly improves power consumption and lowers the core temperature 10 or so degrees (Celsius). I installed the minimal version w/o the Nvidia drivers. Doesn't really matter - Bumblebee is solid and is not causing any problems. The instructions can be found here: https://wiki.ubuntu.com/Bumblebee

    6. As far, as the "user experience" is concerned, Suspend/resume works out of the box (minus the ACPI issue - see below).

    7. So is the trackpad - no fixes necessary though you may play with synclient to tweak various settings. The default ones were enough for me - adjusted everything else using the Mouse tool in the standard System Settings. It is not as clever, as Mac's detection of proper two-finger scroll since people rarely move their fingers 100% horizontally or vertically. I disabled the horizontal scroll for that reason - diagonal scrolling. It'd also be nice (to have a setting) to ignore the second finger unless dragging - the way it works on both Mac and Windows since people (at east myself) tend to keep it in the lower left corner ready to press.

    8. Samsung-specific support (voria repo) - namely samsung-laptop package is not available for 12.10 at he moment, so don't install it to fix the F-keys. It breaks them instead. F2-F8 work anyway out of the box and I am not missing the adjustable keyboard backlight: the standard automatic one is enough for me. Here is the repo link: https://launchpad.net/~voria/+archive/ppa. You'd need samsung-laptop and samsung-tools. Play at your own risk.

    9. The only real issue: serious, but not enough to make me put back the original HDD and return the notebook to Best Buy. This is the infamous ACPI/kworker kernel bug affecting many newer notebooks, not just Samsung series 7. I posted my observations here: https://bugs.launchpad.net/ubuntu/+s...ux/+bug/887793. Not sure how to convey it to the Linux kernel team, but it is not an XFS (filesystem) bug. That wrong assignment is probably preventing it from being fixed for several months over several Ubuntu releases.

    There is no fix (at the moment). Just keep rebooting, waiting for the kworker to calm down and "helping" it by jerking the power cord in and out. No other "solution" mentioned in that thread worked for me (pci=noacpi, etc.). This issue also makes Suspend unusable though it formally works in 12.10 w/o any fix scripts. The Core 1 utilization goes to 100% upon Resume and stays there. I noticed that if the kworker misbehaves for whatever reason: on its own or after resume, it is very hard to get it back to normal - requires a number of restarts. Typically restarting with alternating kernel versions (results of updates) helps. Not sure why, like some kernel flag is being reset. I am not a system programmer, so can only speculate about it.

    When kworker is calm, the core temperature stays between 45-50 degrees Celsius (no fan engaged) and the battery life is about 5 hours - not the best in class, but very respectable.
    Last edited by caliber556; December 1st, 2012 at 06:32 PM.

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