Closed Bug 1682281 Opened 3 years ago Closed 3 years ago

sw-wr: Visual glitches on latest Nightly on single core 32 bit Win7 without working D3D11

Categories

(Core :: Graphics, defect)

x86
Windows 7
defect

Tracking

()

VERIFIED FIXED
Tracking Status
firefox86 --- disabled

People

(Reporter: vlucaci, Assigned: mattwoodrow)

References

(Blocks 1 open bug)

Details

(Keywords: regressionwindow-wanted)

Attachments

(1 file)

Affected versions

  • 85.0a1(20201214091023)

Affected platforms

  • Win7x86

Steps to reproduce

  1. Launch FF.
  2. Notice the launch pages.

Expected result

  • All of the browser window and web contents are displayed without any issues.

Actual result

  • The page is displayed either with a blank white intermittence , either the whole screen going black.

Suggested Severity

  • Even tough this issue was only encountered on one device, I would S3 this issue because it is still a significant UI issue that could manifest on other low-end configurations as well.

Regression range

  • Manual regression range searching is required here because mozregression-ui can not be installed on this OS . Will return with one ASAP.

Notes:

  • Screen cast of the issue: https://drive.google.com/file/d/1wTjiHnylbfdUxJyKF0UJyP7Jfxo6DLkW/view?usp=sharing
  • This issue was encountered with fission and webrender preffs off
  • This issue does not occur in RC3 84.0(20201211215739)
  • This issue was not encountered on any other OS running 7x86
  • This issue does not encounter on latest Chrome.
  • This issue occurs for any webpage accessed.
  • This may be a device specific issue seeing as how the hardware configuration on which this was encountered is as follows: 2 GB RAM, Intel GMA 500, Intel Atom

Jeff, could this be related to recent win7/DWM changes?

Flags: needinfo?(jmuizelaar)

Vlad, can you post the about:support for that device?

Flags: needinfo?(jmuizelaar) → needinfo?(vlad.lucaci)
QA Whiteboard: [qa-regression-triage]
Attached file about support.txt

Hello,

I have attached the about:support of the affected device as well.

Flags: needinfo?(vlad.lucaci)

Thanks Vlad. I can see that your firefox is running with software webrender. Could you try disabling that by ensuring that gfx.webrender.software is false and gfx.webrender.all is true in about:config, restart Firefox, and see if that helps? Thanks.

Flags: needinfo?(vlad.lucaci)

Seems likely a SW-WR issue on Intel Atom, Vlad to confirm. Probably regressed by bug 1681921.

Andrew, should we disable SW-WR by default on this platform?

Flags: needinfo?(aosmond)
Severity: -- → S3

Could you also try with gfx.webrender.software.d3d11 set to false, gfx.webrender.software set to true and gfx.webrender.all to set false? Thanks!

Summary: Visual glitches on latest Nightly with a specific OS/Hardware configuration → sw-wr: Visual glitches on latest Nightly on single core 32 bit Win7 without working D3D11
See Also: → 1671208, 1676762
Has Regression Range: --- → no
Has STR: --- → yes

(In reply to Andrew Osmond [:aosmond] from comment #6)

Could you also try with gfx.webrender.software.d3d11 set to false, gfx.webrender.software set to true and gfx.webrender.all to set false? Thanks!

Hello,

I have managed to reproduce the issue with the same repro steps as in Description with the configuration suggested in comment 6 with Nightly 86.0a1(20210105215658)

Flags: needinfo?(vlad.lucaci)

Disabling the d3d11 compositor (gfx.webrender.software.d3d11=false), while using software WR (gfx.webrender.software=true) gives me quite a few glitches, though I can't reproduce anything as bad as a fully black or white window).

Unfortunately the screen recording from comment 0 doesn't appear to load for me.

I can still repro this on latest m-c, and disabling the partial present code makes this go away.

Assignee: nobody → matt.woodrow
Depends on: 1686363

Managed to reproduce this fully, by disabling the gpu process.

Lee's patches in bug 1686363 fix all the issues that I can find.

Flags: needinfo?(aosmond)

Vlad, can you confirm if bug 1686363 fixed the issues you were experiencing?

Flags: needinfo?(vlad.lucaci)

Hello

Confirming this issue as verified fixed and no longer present on 86.0a1(20210119091250) and 85.0(20210118153634) with the affected Win7x86 device.

Status: NEW → RESOLVED
Closed: 3 years ago
Flags: needinfo?(vlad.lucaci)
Resolution: --- → FIXED
Status: RESOLVED → VERIFIED
Hardware: Desktop → x86
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