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Thread: Random screen flashing after suspend on KDE

  1. #1

    Default Random screen flashing after suspend on KDE

    Hello,

    I tried Leap 15.2 rc and I have serious problem with my laptop after suspend. Screen is randomly blinking when opening new window or scrolling in KDE with default kernel. Problem not persist in GNOME.

    It happens only on one of my machines and only after wakeup from suspend. Maybe worth to notice, that this one is hidpi screen.

    Could you please guys help me resolve this?

  2. #2
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    Default Re: Random screen flashing after suspend on KDE

    So whats different between the two machines? Graphics maybe?, CPU ??

  3. #3

    Default Odp: Re: Random screen flashing after suspend on KDE

    Quote Originally Posted by gogalthorp View Post
    So whats different between the two machines? Graphics maybe?, CPU ??
    Both have intel cpu and gpu. The biggest difrence is that in that one that have problem is a HiDPi screen.
    It never happened on any other distros i used (Leap 15.1, Tumbleweed, Kubuntu, PopOS, Manjaro... etc) It happens only on Leap 15.2 KDE.

  4. #4
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    Default Re: Random screen flashing after suspend on KDE

    Which Intel CPU's. GPU's may vary between Intel generation.

    Maybe show lspci for both.

  5. #5

    Default Re: Random screen flashing after suspend on KDE

    Quote Originally Posted by gogalthorp View Post
    Which Intel CPU's. GPU's may vary between Intel generation.

    Maybe show lspci for both.

    The one that works fine:
    Code:
    00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers (rev 05)
    00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Cont
    roller (x16) (rev 05)
    00:02.0 VGA compatible controller: Intel Corporation HD Graphics 630 (rev 04)
    00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core P
    rocessor Thermal Subsystem (rev 05)
    00:14.0 USB controller: Intel Corporation 100 Series/C230 Series Chipset Family USB 3.0 xHCI Cont
    roller (rev 31)
    00:14.2 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family The
    rmal Subsystem (rev 31)
    00:15.0 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Ser
    ial IO I2C Controller #0 (rev 31)
    00:15.1 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Ser
    ial IO I2C Controller #1 (rev 31)
    00:16.0 Communication controller: Intel Corporation 100 Series/C230 Series Chipset Family MEI Con
    troller #1 (rev 31)
    00:17.0 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 31)
    00:1c.0 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port
    #1 (rev f1)
    00:1c.2 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port
    #3 (rev f1)
    00:1c.3 PCI bridge: Intel Corporation 100 Series/C230 Series Chipset Family PCI Express Root Port
    #4 (rev f1)
    00:1e.0 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Ser
    ial IO UART #0 (rev 31)
    00:1e.2 Signal processing controller: Intel Corporation 100 Series/C230 Series Chipset Family Ser
    ial IO GSPI #0 (rev 31)
    00:1f.0 ISA bridge: Intel Corporation HM175 Chipset LPC/eSPI Controller (rev 31)
    00:1f.2 Memory controller: Intel Corporation 100 Series/C230 Series Chipset Family Power Manageme
    nt Controller (rev 31)
    00:1f.3 Audio device: Intel Corporation CM238 HD Audio Controller (rev 31)
    00:1f.4 SMBus: Intel Corporation 100 Series/C230 Series Chipset Family SMBus (rev 31)
    01:00.0 3D controller: NVIDIA Corporation GP107M [GeForce GTX 1050 Mobile] (rev ff)
    03:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)
    04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabi
    
    t Ethernet Controller (rev 15)

    The one that have issue:
    Code:
    00:00.0 Host bridge: Intel Corporation Coffee Lake HOST and DRAM Controller (rev 0b)00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (Whiskey Lake)
    00:04.0 Signal processing controller: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core
    Processor Thermal Subsystem (rev 0b)
    00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen
    Core Processor Gaussian Mixture Model
    00:12.0 Signal processing controller: Intel Corporation Cannon Point-LP Thermal Controller (rev
    30)
    00:14.0 USB controller: Intel Corporation Cannon Point-LP USB 3.1 xHCI Controller (rev 30)
    00:14.2 RAM memory: Intel Corporation Cannon Point-LP Shared SRAM (rev 30)
    00:14.3 Network controller: Intel Corporation Cannon Point-LP CNVi [Wireless-AC] (rev 30)
    00:15.0 Serial bus controller [0c80]: Intel Corporation Cannon Point-LP Serial IO I2C Controlle
    r #0 (rev 30)
    00:15.1 Serial bus controller [0c80]: Intel Corporation Cannon Point-LP Serial IO I2C Controlle
    r #1 (rev 30)
    00:16.0 Communication controller: Intel Corporation Cannon Point-LP MEI Controller #1 (rev 30)
    00:1c.0 PCI bridge: Intel Corporation Cannon Point-LP PCI Express Root Port #5 (rev f0)
    00:1d.0 PCI bridge: Intel Corporation Cannon Point-LP PCI Express Root Port #9 (rev f0)
    00:1e.0 Communication controller: Intel Corporation Device 9da8 (rev 30)
    00:1e.3 Serial bus controller [0c80]: Intel Corporation Device 9dab (rev 30)
    00:1f.0 ISA bridge: Intel Corporation Cannon Point-LP LPC Controller (rev 30)
    00:1f.3 Audio device: Intel Corporation Cannon Point-LP High Definition Audio Controller (rev 3
    0)
    00:1f.4 SMBus: Intel Corporation Cannon Point-LP SMBus Controller (rev 30)
    00:1f.5 Serial bus controller [0c80]: Intel Corporation Cannon Point-LP SPI Controller (rev 30)
    01:00.0 3D controller: NVIDIA Corporation GP108M [GeForce MX150] (rev ff)
    
    02:00.0 Non-Volatile memory controller: Sandisk Corp WD Black 2018/PC SN720 NVMe SSD

  6. #6
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    Default Re: Random screen flashing after suspend on KDE

    Bad one appears to have a Xeon processor and NVIDIA graphics. It does not look like the Xeon has a built in GPU so this is not Optimus.

    Have you installed the NVIDIA driver on the the Xeon machine? If so try uninstalling it. If not try installing it.

    Are these desktop or Laptops??

    The good one is pure standard Intel.

    Hmmm are you running X11 or Wayland in KDE. Avoid Wayland+NVIDIA in KDE It is just not there yet.

  7. #7

    Default Odp: Random screen flashing after suspend on KDE

    Its Intel Core i7-8565U with Optimus (Intel UHD Graphics 620/NVIDIA GeForce MX150).
    I only use Intel one with modesetting driver. Nvidia is powered off by suse-prime with bbswitch.
    I tried all: Plasma on Xorg, Plasma XWayland and Full Wayland.
    Only seems to working correct in Full Wayland.

  8. #8

    Default Re: Random screen flashing after suspend on KDE

    So looks like this is a kernel 5.3 bug. When I updated to new 5.6.15 problem has gone.

  9. #9
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    Default Re: Random screen flashing after suspend on KDE

    Quote Originally Posted by tosziro View Post
    So looks like this is a kernel 5.3 bug. When I updated to new 5.6.15 problem has gone.
    It might be worth filing a bug report on this.
    openSUSE Leap 15.2; KDE Plasma 5.18.5;

  10. #10
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    Default Re: Random screen flashing after suspend on KDE

    Try adding the kernel head repo and switch to the latest kernel from there
    See if it still happens
    Tumbleweed_KDE
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