[Bug 1796720] Re: High GPU temperature after kernel 4.18.0.9.10 on AMD RX460

Hi Cristian,

thank you for the heads up...

Regards

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https://bugs.launchpad.net/bugs/1796720

Title:
High GPU temperature after kernel 4.18.0.9.10 on AMD RX460

Status in Linux:
Unknown
Status in linux package in Ubuntu:
Confirmed

Bug description:
Hello,

Today I have received an update for Linux kernel which upgraded the
kernel on my Ubuntu 18.10 installation to 4.18.0.9.10! Immediately
after restart I noticed that the GPU temperature is abnormally High...

Before Update:
- GPU fan set to off on idle
- GPU idle temperature: 29-32 C

After Update:
- GPU fan set to off on idle
- GPU idle temperature: 47-50 C (which I have to put the fans on 50% to keep it on 33 C)

I have also tried to boot from the older kernel (4.18.0.8) and
everything is normal there!

System spec:
- MB: ASUS Prime x299-deluxe
- CPU: Intel Corei7 7820x skylake-x
- GPU: AMD RX460

glxinfo | grep OpenGL:

OpenGL vendor string: X.Org
OpenGL renderer string: AMD Radeon (TM) RX 460 Graphics (POLARIS11, DRM 3.26.0, 4.18.0-9-generic, LLVM 7.0.0)
OpenGL core profile version string: 4.5 (Core Profile) Mesa 18.2.1
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.4 (Compatibility Profile) Mesa 18.2.1
OpenGL shading language version string: 4.40
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 18.2.1
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

sudo cat /sys/kernel/debug/dri/0/amdgpu_pm_info:

Clock Gating Flags Mask: 0x37bcf
 Graphics Medium Grain Clock Gating: On
 Graphics Medium Grain memory Light Sleep: On
 Graphics Coarse Grain Clock Gating: On
 Graphics Coarse Grain memory Light Sleep: On
 Graphics Coarse Grain Tree Shader Clock Gating: Off
 Graphics Coarse Grain Tree Shader Light Sleep: Off
 Graphics Command Processor Light Sleep: On
 Graphics Run List Controller Light Sleep: On
 Graphics 3D Coarse Grain Clock Gating: Off
 Graphics 3D Coarse Grain memory Light Sleep: Off
 Memory Controller Light Sleep: On
 Memory Controller Medium Grain Clock Gating: On
 System Direct Memory Access Light Sleep: Off
 System Direct Memory Access Medium Grain Clock Gating: On
 Bus Interface Medium Grain Clock Gating: Off
 Bus Interface Light Sleep: On
 Unified Video Decoder Medium Grain Clock Gating: On
 Video Compression Engine Medium Grain Clock Gating: On
 Host Data Path Light Sleep: Off
 Host Data Path Medium Grain Clock Gating: On
 Digital Right Management Medium Grain Clock Gating: Off
 Digital Right Management Light Sleep: Off
 Rom Medium Grain Clock Gating: On
 Data Fabric Medium Grain Clock Gating: Off

GFX Clocks and Power:
 1750 MHz (MCLK)
 1212 MHz (SCLK)
 214 MHz (PSTATE_SCLK)
 300 MHz (PSTATE_MCLK)
 1081 mV (VDDGFX)
 18.65 W (average GPU)

GPU Temperature: 39 C
GPU Load: 0 %

UVD: Disabled

VCE: Disabled

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: linux-image-4.18.0-9-generic 4.18.0-9.10
ProcVersionSignature: Ubuntu 4.18.0-9.10-generic 4.18.12
Uname: Linux 4.18.0-9-generic x86_64
ApportVersion: 2.20.10-0ubuntu11
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: shadowfax 3078 F.... pulseaudio
 /dev/snd/controlC0: shadowfax 3078 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Mon Oct 8 20:27:13 2018
InstallationDate: Installed on 2018-09-26 (11 days ago)
InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Beta amd64 (20180925.1)
MachineType: System manufacturer System Product Name
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-9-generic root=UUID=a58662c7-39e2-4f05-9da6-d63173c94d53 ro quiet splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-4.18.0-9-generic N/A
 linux-backports-modules-4.18.0-9-generic N/A
 linux-firmware 1.175
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/03/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1503
dmi.board.asset.tag: Default string
dmi.board.name: PRIME X299-DELUXE
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: Rev 1.xx
dmi.chassis.asset.tag: Default string
dmi.chassis.type: 3
dmi.chassis.vendor: Default string
dmi.chassis.version: Default string
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1503:bd08/03/2018:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnPRIMEX299-DELUXE:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: System Product Name
dmi.product.sku: SKU
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer

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