[Bug 109959] REGRESSION: black screen with linux 5.0 when starting X

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109959

--- Comment #20 from Emanuele Panigati <ilpanich at gmail.com> ---
(In reply to Jason Antman from comment #19)
> I'm also experiencing this issue, on Arch Linux kernel 5.0.3 running on a
> Dell Precision 5530
> 
> BIOS 1.3.0 (07/12/2018)
> Intel(R) Core(TM) i5-8400H CPU @ 2.50GHz (family: 0x6, model: 0x9e,
> stepping: 0xa)
> 00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630
> (Mobile)
> 01:00.0 3D controller: NVIDIA Corporation GP107GLM [Quadro P1000 Mobile]
> (rev a1)
> 
> I've tried building a kernel package for Arch with Mark's patch applied (
> https://github.com/jantman/arch-pkgbuilds/tree/master/linux-precision5530
> for PKGBUILD and source, binaries linked from
> http://archrepo.jasonantman.com/current/index.html ), but when running with
> that patched kernel and the ``force_edp_wide=1`` parameter set, I see no
> real difference in behavior from my previous ~35 hours struggling with video
> on this machine: external displays work fine, eDP is just backlight and
> black screen.
> 
> Would it be possible for someone who's verified this patch to post the
> details of their kernel parameters and driver versions/config?

Same for me (Dell XPS 9570): kernel 5.0.3 with Mark's patch has the same issue
found in non-patched kernel, while using https://invent.kde.org/snippets/44
patch the system boots fine (I am writing from arch with 5.0.3 kernel patched).

If it can help, my current kernel params are:

add_efi_memmap rw acpi_rev_override=1 nvidia-drm.modeset=1 pcie_port_pm=on
acpi_osi="Windows 2009"

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