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    • [Deepin 15.2] Segfault lightdm-deepin > libQt5Core.so for optimus laptop
    Community Discussion 759 views · 1 replies ·
    Tofloor
    poster avatar
    beanow
    deepin
    2016-08-03 08:02
    Author
    Edited by beanow at 2016-8-3 00:06

    After using various tricks like nomodeset in the kernel boot flags to be able to use the freshly installed 15.2 partition on my laptop at all.
    I installed the nvidia drivers using the driver manager, then followed /usr/share/doc/nvidia-driver/html/index.html
    I've attempted to configure a xrandr offloading graphics display setup (chapters 17 and 32).

    However that gives me repeated crashes and black screen before getting to the login, and the following in syslog.

    kernel: [    5.358570] vgaarb: this pci device is not a vga device
    kernel: [    5.364311] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150930/nsarguments-95)
    ...
    systemd[1]: Started User Manager for UID 107.
    kernel: [    7.621696] lightdm-deepin-[853]: segfault at 18 ip 00007f335589d74f sp 00007ffeed29ad70 error 4 in libQt5Core.so.5.5.1[7f3355769000+4c5000]
    kernel: [    7.829159] ACPI Warning: \_SB_.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20150930/nsarguments-95)
    ...
    systemd[1]: lightdm.service: Main process exited, code=exited, status=1/FAILURE
    systemd[1]: lightdm.service: Unit entered failed state.
    systemd[1]: lightdm.service: Failed with result 'exit-code'.

    I'm not sure exactly where deepin does it's debugging for this kind of issue, but I figured I would start here.

    My xorg.conf.
    1. Section "ServerLayout"
    2.     Identifier "layout"
    3.     Screen 0 "nvidia"
    4.     Inactive "intel"
    5. EndSection

    7. Section "Device"
    8.     Identifier "nvidia"
    9.     Driver "nvidia"
    10.     BusID "01:00:0"
    11.     Option "RegisteryDwords" "EnableBrightnessControl=1"
    12. EndSection

    14. Section "Screen"
    15.     Identifier "nvidia"
    16.     Device "nvidia"
    17.     Option "AllowEmptyInitialConfiguration"
    18. EndSection

    20. Section "Device"
    21.     Identifier "intel"
    22.     Driver "modesetting"
    23. EndSection

    25. Section "Screen"
    26.     Identifier "intel"
    27.     Device "intel"
    28. EndSection
    Copy the Code
    Xorg.0.log http://pastebin.com/ERm3ywPQ
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    com_bvv
    deepin
    2016-08-03 08:24
    #1
    old sores QT5 for Deepin
    [ 7145.397063] dde-dock[4597]: segfault at 7fef7c0cece0 ip 00007fef8b70c3d8 sp 00007ffd772115f0 error 4 in libQt5Gui.so.5.5.1[7fef8b598000+527000]
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