Ville, Jani, can you comment here? 
It seems patch to fix issues is from KrH.

Ville, Jani, what could course of actions here?

Hi Ville, Jani,

Please suggest a course of action.

ping,

Azhar,
Could you try using latest drm-tip: https://cgit.freedesktop.org/drm-tip and send dmesg with drm.debug=0x1e log_buf_len=4M from start to problem and attach logs as plain text here?

Created attachment 141059 [details] [review]
Wait a vblank after disabling planes, before disabling crtc

Does this fix the bug?

Created attachment 141073 [details]
vertical corruption logs

(In reply to Chintan Patel from comment #7)
> Created attachment 141073 [details]
> vertical corruption logs

Hi Maarten,

I cherry-picked your patch (with small change, as patch gave compilation error on pipe definition; intel_crtc->pipe instead of pipe) on drm-tip 4.18.0-01978-g273ade7fd922

                        intel_crtc_disable_pipe_crc(intel_crtc);

+                       /* Wait a vblank for planes to actually be turned off */
+                       intel_wait_for_vblank(dev_priv, intel_crtc->pipe);
+
                        dev_priv->display.crtc_disable(to_intel_crtc_state(old_crtc_state), state);
                        intel_crtc->active = false;
                        intel_fbc_disable(intel_crtc);

Issue is still reproducible. Attaching the logs..

I suspect the cursor getting stuck is caused by the DDB/WM update cancelling the already armed cursor disable. And later we don't rearm the cursor disable before the pipe gets shut down.

I was trying to come up with a better way to do the plane/ddb/wm updates (for bug #104975). It might be worth a shot here as well:
git://github.com/vsyrjala/linux.git skl_plane_update_ddb_sequence

With git://github.com/vsyrjala/linux.git skl_plane_update_ddb_sequence I am not able to reproduce this issue.

Azhar, have you tried tried Ville's proposal?

@Lakshmi, please see comment 10.

I already tried ville's branch(git://github.com/vsyrjala/linux.git skl_plane_update_ddb_sequence) and it fixes the issue.

Update: Patches are under-review.

Created attachment 142421 [details]
attachment-2906-0.html

I will be OOO on Oct 05 and Oct 08. Please expect dealy in email responses.


Thanks,
Chintan

(In reply to Lakshmi from comment #13)
> Update: Patches are under-review.

Can you provide the patchwork link to the series that exactly addresses this issue? My team would be happy to test while patches are still in review and provide Tested-by

(In reply to nathan.d.ciobanu from comment #15)
> (In reply to Lakshmi from comment #13)
> > Update: Patches are under-review.
> 
> Can you provide the patchwork link to the series that exactly addresses this
> issue? My team would be happy to test while patches are still in review and
> provide Tested-by

https://patchwork.freedesktop.org/series/51878/

Note that some of the patches were already pushed so it won't apply cleanly as a whole anymore.

hey. As I found out, https://bugs.freedesktop.org/show_bug.cgi?id=108257 this ticket was closed as fixed. I think that current one is the same and also should be closed. Reporter, did you try to check drm-tip, how it works for you?

Any updates from reporter?

Jani, I think this one also can be closed. 
https://bugs.freedesktop.org/show_bug.cgi?id=107951 In this ticket reporter confirmed fix, and I am 99% sure that current issue is simply duplicate of that (and one more, already closed)

I assume this issue has been fixed. Closing this bug. 
Feel free to reopen if you still have the issue. 

When you reopen ensure that issue is with latest drmtip. (https://cgit.freedesktop.org/drm-tip)

Attach the full dmesg from boot with kernel parameters drm.debug=0x1e log_buf_len=4M.

Thanks a lot for giving here summery of Vertical line corruptions seen on the left side of Gen 9+ display of the product DRI. Glad to find it here. 

Caroline,
Economics personal statement writer - http://www.personalstatementfolks.co.uk/economics-personal-statement/ at Personal Statement Folks in UK.