Created attachment 140036 [details] dmesg -- system architecture: x86_64 -- kernel version: Linux version 4.16.13-1-ARCH (builduser@heftig-15406) (gcc version 8.1.0 (GCC)) #1 SMP PREEMPT Thu May 31 23:29:29 UTC 2018 -- Linux distribution: Antergos (Arch clone) -- Machine or mother board model: Lenovo Yoga 910, Core i7-7500U, HD Graphics 620 -- Display connector: Integral -- Kernel command line params: quiet drm.debug=0x1e log_buf_len=1M i915.enable_rc6=0 i915.enable_psr=0 i915.enable_guc_loading=1 i915.enable_guc_submission=1 (most of those are as a result of me trying to fix this on my own) I've waited for this to clear up, but it hasn't so either my system is misconfigured or I'm running into a bug. The error logged is this: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun Here's a GIF of what I'm seeing: https://gfycat.com/UnsightlyWellinformedAlligator I'm running Wayland 1.15.0, Gnome 3.28.2, GDM 3.28.1. As soon as I boot a 4.16 kernel the screen starts flickering. Downgrading to 4.15.11 fixes it right up. I can't dump vbios as I get an Input/Output error. Never messed with that before so no idea if related. == dmesg (also attached): https://pastebin.com/JkQsCmLs == intel_reg dump: https://pastebin.com/PjQsYQFp Any ideas?
Did you try intel_iommu=igfx_off? Of the options you set, the only vaguely relevant one is i915.enable_psr=0 which is the default.
Created attachment 140040 [details] attachment-5188-0.html Hey thanks for the reply. I tried that param just now to no avail. On Tue, 5 Jun 2018 at 23:26, <bugzilla-daemon@freedesktop.org> wrote: > *Comment # 1 <https://bugs.freedesktop.org/show_bug.cgi?id=106829#c1> on > bug 106829 <https://bugs.freedesktop.org/show_bug.cgi?id=106829> from Chris > Wilson <chris@chris-wilson.co.uk> * > > Did you try intel_iommu=igfx_off? Of the options you set, the only vaguely > relevant one is i915.enable_psr=0 which is the default. > > ------------------------------ > You are receiving this mail because: > > - You reported the bug. > >
Juat to be sure, can you try this with the latest drm-tip?
(In reply to Francesco Balestrieri from comment #3) > Juat to be sure, can you try this with the latest drm-tip? Well, this is awkward. I tried installing drm-tip with defaultconf. But it's been a long time since I've compiled a kernel. Anyway, I failed, bricked my root partition, and ended up having to reinstall. A fresh install of Antergos with kernel 4.16.13-2-ARCH is working fine without any flicker. Sigh Unneccessary embarrassing info: (What I'd done was, I had a way too small /boot partition, 64mb. When I was trying to boot into the drm-tip I forgot that I'd need a driver module to access my ssd. So I didn't have a initramfs and no way to fit it, also I wasn't sure if using the other initramfs would work as I didn't know where the actual i915 driver was. Frustrated, I decided to resize my root so I could fit a bigger boot. Misjudged some calculations and ended up with a filesystem that thought it was slightly bigger than its partition, I couldn't get out of a fsck/resize2fs catch 22, so I just said f-it and reinstalled, since I have all my data on a separate /home partition.)
Sorry for having led you to a reinstall. The silver lining is that we can close this bug...
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