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nylas / nylas-mail

:love_letter: An extensible desktop mail app built on the modern web. Forks welcome!
https://nylas.com/nylas-mail/
MIT License
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Video tearing on Linux Mint 17.2 #362

Closed dmark closed 8 years ago

dmark commented 9 years ago

I don't expect this is an N1 specific issue, but logging it here for good measure. As with chromium, I get a lot of video tearing effects with N1 that render the app unusable.

Linux Mint 17.2 Cinnamon edition w/default 3.13.0-37-generic kernel, Broadwell-U integrated graphics using i915 driver on a Dell Latitude E5450.

Screen capture here: https://youtu.be/rzeWd-ESKno

mbilker commented 9 years ago

That is weird. You said you normally get tearing artifacts in Chrome/Chromium. Do you have mesa installed along with its libgl driver. What is the result of chrome://gpu in Chromium?

dmark commented 9 years ago

Mesa appears to be installed along with libgl. At least, dpkg -s on a few of the related packages shows everything is in order.

I've dumped the output from chrome://gpu into a google doc here:

https://docs.google.com/document/d/1JzKCDgolXAX1z30zTlfnqWt5I48Svg6H3X6PvMasmgk/edit?usp=sharing

Chromium suffers terrible tearing on my system (I don't recall this being an issue prior to Mint 17.x). I've tried a few suggested fixes but I don't use chromium much so it hasn't been a priority. An aside but maybe related due to underlying technology: The Atom editor exhibits the same sort of video tearing effects.

mbilker commented 9 years ago

This would have to be an issue with Mesa or the Intel driver. Have you tried to see if the issue exists in other window managers? Are you using a compositing engine (compton, compiz)? What is the configuration for the Intel driver in X11 (/etc/X11/xorg.conf, /etc/X11/xorg.conf.d)?

This is an interesting bug and it appears Mesa is just fine. I forget if you can force vsync.

mbilker commented 9 years ago

Another thing. Do you have a ~/.drirc?

dmark commented 9 years ago

No, no .drirc file in my homedir.

dmark commented 9 years ago

I've fixed, or at least worked around from my perspective, the tearing issues in N1. I had previously added to my /etc/environment:

CLUTTER_PAINT=disable-clipped-redraws:disable-culling
CLUTTER_VBLANK=True

This was related to fixing some problems running games from Steam (in particular Half-Life and its relatives). I commented those lines out, restarted my X session and N1 is working fine now.

mbilker commented 9 years ago

Wow. Looks like Vsync stuff. I thought it was an issue with some configuration. Thank you for discovering this. I will think of this whenever someone else has this issue.