** Attachment added: stutter_dmesg
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/964231/+attachment/3690209/+files/hdmi_failure
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Title:
the above notes were from precise 3.5.0-27. I tried the latest raring
3.8.0-22 and could not reproduce the issue even after suspending the
machine 10 different times.
** Changed in: linux (Ubuntu)
Status: Incomplete = New
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Jeff, how about the current raring kernel? If you're on precise then
just sudo apt-get install linux-generic-lts-raring. Can you please get
the info in comment 10 also so we can see what the actual problem is and
dig into it more?
echo 6 /sys/modules/drm/parameters/debug ; sleep 20; dmesg
**
Okay, so...
I tried v3.9-rc8 and the latest in mainline and couldn't repro the
issue.
Also, I cannot reproduce this problem with an ASUS monitor I have, only
an acer model number: S231HL.
The issue, when reproducible seems to get progressively worse after the
machine has resumed from suspend.
Jeff, have you had a chance to try the kernel from comment #23?
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System Stutter When HDMI Monitor Is Connected
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Jeff: Is there any chance you could file a new bug on an affected cert
machine with ubuntu-bug xorg so I can see the specific monitor info for
what you are hitting it on? Also, can you include the info in comment
#10 on the stock kernel, and also try a 3.9 based mainline kernel from
FYI, the monitor with which I experienced this issue is an Acer Acer
S231HLbid. See comment #11.
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Title:
System Stutter When HDMI Monitor Is
@Robert, hi robert, do you have any update ?
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu Precise)
Status: New = Confirmed
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux (Ubuntu Quantal)
Status: New = Confirmed
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** Package changed: xserver-xorg-video-intel (Ubuntu) = linux (Ubuntu)
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System Stutter When HDMI Monitor Is Connected
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Would it be possible to get the info requested in comment #10 please?
Does booting with drm_kms_helper.poll=0 added to the kernel command line
help? That is the fix for the known stall referenced in comment #6. Is
there a known good kernel that does work, and if not would it be
possible to try
I will check these two things later today.
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Yep. I will try to get to this today.
Tom Deering | PhD Student | ISU ECpE Software Systems | (563) 249-9277
On Thu, Apr 18, 2013 at 7:56 AM, Robert Hooker sarv...@gmail.com wrote:
Would it be possible to get the info requested in comment #10 please?
Does booting with drm_kms_helper.poll=0
@Robert I'm thrilled to say that *both* solutions worked!
First, drm_kms_helper.poll=0 with the current Quantal kernel made the
stutter problem go away.
Second, I grabbed the current daily build of Raring from
http://cdimage.ubuntu.com/daily-live/current/, created a bootable USB,
booted from it,
** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: High = Critical
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** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided = High
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** Tags added: 201202-10645
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** Tags added: 201205-10647
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** Tags added: 201208-11524
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** Tags added: 201202-10573
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** Tags added: 201202-10574
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** Changed in: xserver-xorg-video-intel (Ubuntu)
Assignee: Canonical Hardware Enablement Team (canonical-hwe-team) = Timo
Aaltonen (tjaalton)
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@Robert, Hi Robert, could you please take a look at this bug ? thanks
** Changed in: xserver-xorg-video-intel (Ubuntu)
Assignee: Timo Aaltonen (tjaalton) = Robert Hooker (sarvatt)
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** Also affects: xserver-xorg-video-intel (Ubuntu Precise)
Importance: Undecided
Status: New
** Also affects: xserver-xorg-video-intel (Ubuntu Quantal)
Importance: Undecided
Status: New
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** Tags added: 201201-10388
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** Tags added: 201205-11128
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I think drm.debug=6 would help most, if there is a gfx related event it
should show up there.
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System Stutter When HDMI Monitor Is
I mean for example 'echo 6 /sys/modules/drm/parameters/debug ; sleep
10; dmesg'
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Title:
System Stutter When HDMI Monitor Is Connected
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Here's something: The stutter occurs when using HDMI with my primary
monitor, but not with my HDTV.
Monitor: Acer S231HLbid
http://www.newegg.com/Product/Product.aspx?Item=N82E16824009255
TV: Samsung LN37A550
http://www.amazon.com/Samsung-LN37A550-37-Inch-1080p-HDTV/dp/B00141AZR2
The root
I've attached the manuals for the two displays. The relevant pages seem
to be:
Samsung Manual: p44 (labeled 42), discusses HDMI in CEA mode for 1080p
Acer Manual: p12, standard timing table
My best guess for what is happening is that Ubuntu's display output
timing over HDMI is slightly out of
Here's even more information. The output of 'xrandr --prop' with VGA and
with HDMI connected
** Attachment added: VGa xrandr --prop output
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/964231/+attachment/3564104/+files/VGA%20xrandr%20prop.txt
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** Attachment added: HDMI xrandr --prop output
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/964231/+attachment/3564105/+files/HDMI%20xrandr%20prop.txt
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** Tags added: 201206-11154
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This occurs when going through display port as well.
** Tags added: 201202-10579
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** Tags added: 201206-11272 201208-11522
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This one is confusing. There is a known (and fixed) stall with a
periodicity of about 10s. But a stall every 1s, indicates something
peculiar to your hardware, possibly something like an interrupt storm.
Does anything show up in perf top or vmstat or etc...?
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FYI, Ubuntu 12.10 has the same issue with my monitor + HDMI. The freezes
seem to be about 100ms in duration, and occur regularly every 1s. It's
incredibly irritating.
Output of vmstat:
procs ---memory-- ---swap-- -io -system-- cpu
r b swpd free buff cache
** Tags added: 201204-10922 lexington-lab
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** Changed in: xserver-xorg-video-intel (Ubuntu)
Assignee: (unassigned) = Canonical Hardware Enablement Team
(canonical-hwe-team)
** Tags added: blocks-hwcert precise
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** Tags added: blocks-hwcert-enablement
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Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New = Confirmed
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Just purchased a System76 Gazelle Professional laptop, and it has the
same problem with 12.04. It seems this bug cuts across hardware
configurations.
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This is still a problem with Precise (12.04).
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Bump. This bug is still out there, making HDMI utterly unusable with
Ubuntu on my laptop!
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** Tags added: tv-out
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** Package changed: ubuntu = xorg (Ubuntu)
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