I'm not really sure how to collect the info for the suspend but I managed to fix the problem by installing this driver (https://github.com/patjak/mba6x_bl) with the instructions on the readme
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1550905 Title: [MacBookAir7,1] Backlight control broken. Won't turn on after suspend. Status in linux package in Ubuntu: Incomplete Bug description: The backlight on the MacBookAir7,1 can't be controlled, changing the brightness setting has no effect on the actual screen brightness. If you close the lid and the screen turns off it won't turn back on again, the keyboard lights turn on and you can see the lcd is on if you hold it to the light but the backlight won't turn back on. Tested on Ubuntu 16.04 but it also affects 15.10 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-8-generic 4.4.0-8.23 [modified: boot/vmlinuz-4.4.0-8-generic] ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2 Uname: Linux 4.4.0-8-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.20-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: qwertie 1445 F.... pulseaudio /dev/snd/controlC0: qwertie 1445 F.... pulseaudio CurrentDesktop: Unity Date: Sun Feb 28 21:32:12 2016 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=57c0320e-dc88-4126-9554-7d5e81efd9ca InstallationDate: Installed on 2016-02-28 (0 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160228) Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 05ac:0290 Apple, Inc. Bus 001 Device 006: ID 05ac:828f Apple, Inc. Bus 001 Device 002: ID 0a5c:4500 Broadcom Corp. BCM2046B1 USB 2.0 Hub (part of BCM2046 Bluetooth) Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Apple Inc. MacBookAir7,1 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-8-generic.efi.signed root=UUID=1db7d07c-799d-46d8-95d4-7f86fca35114 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-8-generic N/A linux-backports-modules-4.4.0-8-generic N/A linux-firmware 1.156 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/02/2015 dmi.bios.vendor: Apple Inc. dmi.bios.version: MBA71.88Z.0166.B08.1509021746 dmi.board.asset.tag: Base Board Asset Tag# dmi.board.name: Mac-9F18E312C5C2BF0B dmi.board.vendor: Apple Inc. dmi.board.version: MacBookAir7,1 dmi.chassis.asset.tag: Chassis Board Asset Tag# dmi.chassis.type: 9 dmi.chassis.vendor: Apple Inc. dmi.chassis.version: Mac-9F18E312C5C2BF0B dmi.modalias: dmi:bvnAppleInc.:bvrMBA71.88Z.0166.B08.1509021746:bd09/02/2015:svnAppleInc.:pnMacBookAir7,1:pvr1.0:rvnAppleInc.:rnMac-9F18E312C5C2BF0B:rvrMacBookAir7,1:cvnAppleInc.:ct9:cvrMac-9F18E312C5C2BF0B: dmi.product.name: MacBookAir7,1 dmi.product.version: 1.0 dmi.sys.vendor: Apple Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550905/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp