[Bug 108132] Intel 8550U with 620UHD GPU

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108132

--- Comment #84 from Dmitry <dm at rusinv.com> ---
(In reply to Yugge from comment #83)
> (In reply to Dmitry from comment #81)
> > Lenovo 720s-13IKS 81A8000SRK. Update to latest BIOS (5SSCN34WW to 5SCN38WW)
> > fix the problem for me. Ubuntu 18.10.
> 
> Was interested to see if it was indeed a bios issue for my Lenovo 720s-13IKB
> 81BV so I updated the bios to 6MCN28WW. The issue still remained,
> unfortunately. Just to confirmed, that model is the UHD version right?

Yes, UHD versoin.

dm at 720S-13IKB:~$ sudo systool -vm i915
[sudo] пароль для dm: 
Module = "i915"

  Attributes:
    coresize            = "1740800"
    initsize            = "0"
    initstate           = "live"
    refcnt              = "20"
    srcversion          = "8F2ABA1EAAB491BBB0801EE"
    taint               = ""
    uevent              = <store method only>

  Parameters:
    alpha_support       = "N"
    disable_display     = "N"
    disable_power_well  = "1"
    dmc_firmware_path   = "(null)"
    edp_vswing          = "0"
    enable_cmd_parser   = "Y"
    enable_dc           = "-1"
    enable_dp_mst       = "Y"
    enable_dpcd_backlight= "N"
    enable_fbc          = "1"
    enable_guc          = "0"
    enable_gvt          = "N"
    enable_hangcheck    = "Y"
    enable_ips          = "1"
    enable_ppgtt        = "3"
    enable_psr          = "0"
    error_capture       = "Y"
    fastboot            = "N"
    force_reset_modeset_test= "N"
    guc_firmware_path   = "(null)"
    guc_log_level       = "0"
    huc_firmware_path   = "(null)"
    invert_brightness   = "0"
    load_detect_test    = "N"
    lvds_channel_mode   = "0"
    mmio_debug          = "0"
    modeset             = "-1"
    nuclear_pageflip    = "N"
    panel_ignore_lid    = "1"
    panel_use_ssc       = "-1"
    prefault_disable    = "N"
    reset               = "2"
    vbt_firmware        = "(null)"
    vbt_sdvo_panel_type = "-1"
    verbose_state_checks= "Y"

dm at 720S-13IKB:~$ uname -a
Linux 720S-13IKB 4.18.0-12-generic #13-Ubuntu SMP Wed Nov 14 15:17:05 UTC 2018
x86_64 x86_64 x86_64 GNU/Linux

dm at 720S-13IKB:~$ tlp-stat -s
--- TLP 1.1 --------------------------------------------

+++ System Info
System         = LENOVO Lenovo ideapad 720S-13IKB 81A8
BIOS           = 5SCN38WW
Release        = Ubuntu 18.10
Kernel         = 4.18.0-12-generic #13-Ubuntu SMP Wed Nov 14 15:17:05 UTC 2018
x86_64
/proc/cmdline  = BOOT_IMAGE=/vmlinuz-4.18.0-12-generic root=/dev/nvme0n1p3 ro
quiet splash vt.handoff=1
Init system    = systemd v239
Boot mode      = UEFI

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