ubuntu-webapps-bugs team mailing list archive

[kevin gunn <kevin.gunn@xxxxxxxxxxxxx>]

OK, after quite a bit of research the bottom line is that this is a mali quirk.
There are 2 potential ways both are by specification allowed to sync with the driver - which resulted in a performance issue (covered by this bug) and a "correctness issue" covered by bug 1573014
The performance issue is now addressed by the quirk added to mir0.22 for all the devices with mali gpu.
Further work will continue on bug 1573014 as there are other suspicions from data collected here that the mali driver has other issues.

** Changed in: mir
    Milestone: None => 0.22.0

** Also affects: mir/0.22
   Importance: Undecided
       Status: New

** Changed in: mir/0.22
    Milestone: None => 0.22.0

** Changed in: mir/0.22
       Status: New => Fix Committed

** Changed in: mir
       Status: New => Fix Committed

** Changed in: canonical-devices-system-image
       Status: Confirmed => Fix Committed

** Branch linked: lp:mir/0.22

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https://bugs.launchpad.net/bugs/1550371

Title:
  Webbrowser slow scroll and artifact rendering on freiza

Status in Canonical System Image:
  Fix Committed
Status in Mir:
  Fix Committed
Status in Mir 0.22 series:
  Fix Committed
Status in Oxide:
  Invalid
Status in webbrowser-app package in Ubuntu:
  Invalid

Bug description:
  Copied from private avila bug: https://bugs.launchpad.net/avila-private/+bug/1547569
  STEPS:
  1. Install the latest image
  2. Open the browser
  3. Goto ubuntu.com
  4. Wait for the page to load
  5. Scroll the page

  EXPECT
  Smooth scrolling and rendering as seen on arale and krillin

  ACTUAL:
  Very slow render time on most site with a lot of content
  Scrolling is glitchy and seems to want to fresh render each page as it is scrolled

  This is most prominently seen on ubuntu.com but also ebay and amazon
  webapps.

  Webbrowser seems to display the issue the most although I beleive it
  is more likely to be the graphics stack somewhere, tvoss believe that
  perfservice will hopefully solve the issue.

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