On Tue, Aug 23, 2016 at 06:53:13AM -0400, Jim Abernathy wrote:
On 08/19/2016 10:17 AM, Jim Abernathy wrote:
Not having much luck with the Distro forums on this issue so I
thought I'd ask for advice here.
I've been running Ubuntu 14.04.5 for some time on Intel Core i5 GFX
without any issues. My display is HDMI from the PC to an Onkyo A/V
receiver then to a Sony KDL-XBR6.
When I try a fresh install of 16.04.1, I get a display that blanks
out for 3-5 seconds at random times depending on what is being
displayed at the time. I also have small abouts of video noise that
is random horizontal lines about 1 pixel tall scattered through the
page.
I noticed that 14.04.05 uses X server 1.17.2 and 16.04.1 uses 1.18.3.
When I do the command xrandr --verbose I see some small differences
between 14.04 and 16.04, but it's things like 2 digits displayed
instead of 1. i.e. 60.0 vs. 60.00. I'm only concerned with 1080P
HD.
I've tried this on different computers all with Intel GFX. same results.
This does not occur on other monitors or TVs.
I'd blame it on Sony and Onkyo if they didn't work so well with
Windows, all versions, and ubuntu all versions except 16.04.
It's almost like the auto detection software in the newest version
of X is off just enough to make my display flaky. Kind of like the
old analog CRT TVs that were sensitive to small tweaks to the
horizontal and vertical adjustments.
Any help would be appreciated.
Jim A
Can someone let me know where I can ask questions regarding problems
with X?? I thought this forum would be the place?
Though this is very most likely a bug in the kernel and not in X11,
check whether you're using the intel (likely) or the modesetting driver,
then use the other one (uninstalling xf86-video-intel could be
sufficient for this, but I never used ubuntu. Ask them.)
Since it's also likely a bug in the kernel, check "dmesg | grep intel"
before doing so. You might face the same issue as this guy:
https://bbs.archlinux.org/viewtopic.php?id=216088
Cheers,
Thomas
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