On 08/23/2016 01:10 PM, David Weinehall wrote:
On Tue, Aug 23, 2016 at 11:40:53AM -0400, 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 14.04.4 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.
Core i5 is a bit vague; to know what graphics generation you run,
could you provide the output of:
sudo cat /sys/kernel/debug/dri/0/i915_capabilities
gen: 6
pch: 2
is_mobile: yes
is_i85x: no
is_i915g: no
is_i945gm: no
is_g33: no
need_gfx_hws: yes
is_g4x: no
is_pineview: no
is_broadwater: no
is_crestline: no
is_ivybridge: no
is_valleyview: no
is_haswell: no
is_skylake: no
is_preliminary: no
has_fbc: yes
has_pipe_cxsr: no
has_hotplug: yes
cursor_needs_physical: no
has_overlay: no
overlay_needs_physical: no
supports_tv: no
has_llc: yes
has_ddi: no
has_fpga_dbg: no
jim@test:~$
Also, since it might be a kernel issue, the kernel version would be
nice to know too (uname -a).
Linux test 4.4.0-34-generic #53-Ubuntu SMP Wed Jul 27 16:06:39 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux
Intel Desktop DCP847SKE NUC with Intel Celeron CPU 847 @ 1.10GHZ
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 amouts 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.
Kind regards, David Weinehall
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