1272344 - Screen Resolution Problems with new Mac Minis

Status: RESOLVED FIXED

(Infrastructure & Operations Graveyard :: CIDuty, task)

Description

[Carsten Book [:Tomcat]]

we suddenly run into mysterious reftest failures like bug 1272326 and bug 1272321

a investigation showed that something is wrong with the screen resolution like comparing 

http://mozilla-releng-blobs.s3.amazonaws.com/blobs/mozilla-central/sha512/3dc357071d0ddc39e9a6b95dae0b5386d6f8b2077b5e18b594f280ad1c542a972bbbf3cd7ad342f976c6c0a00a9987526716ac22fd646cadb4c915c7b74a9772

with the wrong resolution and

http://mozilla-releng-blobs.s3.amazonaws.com/blobs/mozilla-central/sha512/0bff18848bbe4e1afc2c2be7cfface7f90c2954094383e6b40ec5f9d85cfb8397c02bc6df974417c56b98daeea5ce5bef10fd6004cadd4fc50c47353174de379

with the expected resolution

Comment 1

[Amy Rich [:arr] [:arich]]

Van, can you verify that the EDID are configured correctly on these machines?

Specific machines that know were showing issues (but it might be all of them):

t-yosemite-r7-0205
t-yosemite-r7-0218
t-yosemite-r7-0365
t-yosemite-r7-0380

buildduty: the screenresolution script should enforce the resolution size before starting buildbot. It's worth checking that it's doing the right thing.

Comment 2

[Amy Rich [:arr] [:arich]]

buildduty: The initial report of the issue speculated that it was the notification center popups that were causing an issue. If we want to disable those, I think we should be able to do so by adding com.apple.notificationcenterui to the disabled services list for OS X in puppet. This would require some testing to verify, though.

Comment 3

[Alin Selagea [:aselagea]]

Slaves from range 201-392 have been disabled in slavealloc until the issue is solved.

Comment 4

[Amy Rich [:arr] [:arich]]

I spoke with :van and he said that (after doing a visual inspection) it looks like a number of the EDIDs were shipped misconfigured. He's going to go through them all and correct the ones that are incorrect, but it's going to take him a couple of days since each one has to be unscrewed and modified and then reattached.

Comment 5

[Van Le [:van]]

sorry for the inconvenience relops. i went ahead and corrected the EDID dials (they were off by 180 degrees in the initial configuration). can you please reenable these hosts and let me know if any issues persist?

Comment 6

[Alin Selagea [:aselagea]]

Re-enabled the hosts, will monitor them during the next hours.

Comment 7

[Alin Selagea [:aselagea]]

Looking much better at the moment, mostly green jobs.

Comment 8

[Intermittent Failures Robot]

56 automation job failures were associated with this bug in the last 7 days.

Repository breakdown:
* mozilla-inbound: 52
* mozilla-central: 4

Platform breakdown:
* osx-10-10: 56

For more details, see:
https://brasstacks.mozilla.com/orangefactor/?display=Bug&bugid=1272344&startday=2016-05-10&endday=2016-05-16&tree=all