[Bug 111668] screen goes black and loses sync after about 10-15 minutes

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111668

--- Comment #15 from Robert Dinse <nanook at eskimo.com> ---
      I apologize but I am apparently still doing something wrong.  I put this
in my /etc/default/grub:

RUB_CMDLINE_LINUX_DEFAULT="quiet splash xdg.force_integrated=1 
modprobe.blacklist=nouveau drm.debug=14 log_buf_len=4M"

      Did update-grub

      Then rebooted, still do not see drm debug in dmesg output, only drm
related messages I get are these:

[    1.403149] fb0: switching to inteldrmfb from EFI VGA
[    1.404305] [drm] Replacing VGA console driver
[    1.405889] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    1.406317] [drm] Driver supports precise vblank timestamp query.
[    1.408462] [drm] Finished loading DMC firmware i915/kbl_dmc_ver1_04.bin 
(v1.4)
[    1.681848] [drm] failed to retrieve link info, disabling eDP
[    1.685817] [drm] HuC: Loaded firmware i915/kbl_huc_ver02_00_1810.bin 
(version 2.0)
[    1.696774] [drm] GuC: Loaded firmware i915/kbl_guc_ver9_39.bin (version 
9.39)
[    1.710299] [drm] Initialized i915 1.6.0 20181204 for 0000:00:02.0 on minor 
0
[    1.751670] fbcon: inteldrmfb (fb0) is primary device
[    1.811512] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device

      Same thing in kern.log.



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On Mon, 16 Sep 2019, bugzilla-daemon at freedesktop.org wrote:

> Date: Mon, 16 Sep 2019 18:03:03 +0000
> From: bugzilla-daemon at freedesktop.org
> To: nanook at eskimo.com
> Subject: [Bug 111668] screen goes black and loses sync after about 10-15
>     minutes
> 
> https://bugs.freedesktop.org/show_bug.cgi?id=111668
>
> --- Comment #14 from Jani Nikula <jani.nikula at intel.com> ---
> "options i915" means they'll get applied as module parameters for i915.
>
> debug=14 is a module parameter for drm module.
>
> log_buf_len is a kernel parameter, not a module parameter at all. It needs to
> be set on the kernel command line.
>
> The conf file you refer to is probably for modprobe. You could start off by
> removing the options for i915 altogether, and add them to the kernel command
> line. On the kernel command line module specific parameters are set using
> modulename.parameter syntax, e.g. drm.debug=14.
>
> You can adjust kernel parameters for each boot at the grub menu, or by editing
> /etc/default/grub and running update-grub after that. At least on some distros.
>
> -- 
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