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Whenever I try to suspend to RAM by either closing the laptop in battery
mode or by clicking sleep on the power menu, the screen goes black, but
the laptop never fully goes to sleep.  The keyboard backlight and power
button stay lit, and the computer won't wake up.  The only way to
restore it is to hold down the power button to force a full shutdown.
I've had this issue on Kubuntu 19.10 as well as 20.04.

On boot, I get an error message about AMD Vi: unable to read/write IOMMU
perf counter.  I am unsure if that is related to my issue.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
Uname: Linux 5.5.11-050511-generic x86_64
ApportVersion: 2.20.11-0ubuntu21
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: KDE
Date: Tue Mar 24 20:10:51 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: No
 Advanced Micro Devices, Inc. [AMD/ATI] Picasso [1002:15d8] (rev c1) (prog-if 
00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Picasso [1043:1b71]
InstallationDate: Installed on 2020-03-06 (18 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200306)
MachineType: ASUSTeK COMPUTER INC. ZenBook UX434DA_UM433DA
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.5.11-050511-generic 
root=UUID=f2ef7f4c-875c-4861-a849-e5ebf6d646fd ro quiet splash vt.handoff=7
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install) 09/05/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: UX434DA_UM433DA.302
dmi.board.asset.tag: ATN12345678901234567 UX434DA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi:bvnAmericanMegatrendsInc.:bvrUX434DA_UM433DA.302:bd09/05/2019:svnASUSTeKCOMPUTERINC.:pnZenBookUX434DA_UM433DA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX434DA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: ZenBook ZenBook UX434DA_UM433DA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.100-4
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.0-1ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 20.0.0-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.20.7-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Tags: amd64 apport-bug focal fonts has-workaround kubuntu reproducible 
single-occurrence ubuntu
System hangs on sleep and won't boot on battery power
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