Thank you for testing. I consider this fixed in oneiric, and continuing
to follow this on natty.
** Also affects: linux (Ubuntu Natty)
Importance: Undecided
Status: New
** Also affects: xserver-xorg-video-intel (Ubuntu Natty)
Importance: Undecided
Status: New
** Changed in:
closing the driver task, this was a kernel issue.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: Fix Released = Invalid
** Changed in: xserver-xorg-video-intel (Ubuntu)
Assignee: Timo Aaltonen (tjaalton) = (unassigned)
** Changed in: linux (Ubuntu Natty)
Assignee:
One remaining problem with Timo's kernel is that Fn-F7 does not work,
which amongst other things means if the laptop ever gets confused with
the internal display off there is no escape other than hard-rebooting.
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One other issue (though it might be compiz rather than the kernel) is
that after ejecting and then re-docking I'm left with a screen that's
totally blank aside from a mouse cursor. The cursor moves with the
mouse and it actually changes shape from arrow to I-bar to finger as I
move around,
Martin: That is indeed a compiz bug.
Fn-F7 not working; weird that for some X201's it does work but not for
you. Don't know why. Has it ever worked?
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The black-screen issue has happened more than once, but I don't yet know
how to consistently reproduce it. It is different to (though maybe
related) to the other issue seen where some regions of the screen aren't
drawn correctly.
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Using Timo's linux-image-2.6.38-10-generic_2.6.38-10.44sru1_amd64.deb,
with my regular external monitor mentioned above: so far so good.
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I tried this on my x201 against an Optoma projector and it seems to
basically work. (I'm not at home with my monitor at the moment.)
I do see the black areas but I agree that's likely a unity thing, or at
least not a modesetting bug.
Fn-F7 does not work.
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Here's a newer kernel with just one commit backported. It seems to make
things more or less functional on a sandybridge system, so please try it
out to see if there are regressions to the stock natty kernel, or to the
one with more backported stuff:
I installed the kernel posted by Timo, and so far I am pretty happy with it.
Let me test it for a few days, though: on my machine (thinkpad t410) these
crashes are a bit erratic.
This is what I tested so far:
Booted docked - correctly shows both LVDS and external monitor
undocked - correctly
using the backport kernel from Timo, with the t410s connected directly
to a Samsung 225BW i still get random switching from LVDS alone to dual
display. I do see some improvements - my screen do not switch off and on
that frequently as compared to default latest kernel, but problem is not
solved.
I've re-tested with just the one patch as per Timo's comment above; this
seems to work just as well for me as my previous test with the
additional patches.
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On my x220, I would agree that Timo's kernel is at least as good as any
of the others I've tried (Martin's, 3.0.1.2 from oneiric). Suspend and
resume works. Trying to enable both monitors leaves large black areas
that are not drawn into, but I think that might be a unity problem.
The summary of
Zak, if you can point me to a PPA with your patched kernel, I'd be glad
to test it with a docking station and report back.
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And, rebasing, 2.6.38-10.44 from natty-proposed + the following patches
also works well for me:
UBUNTU: SAUCE: drm/i915: disable PCH ports if needed when disabling a CRTC
(modified)
drm/i915: Busy-spin wait_for condittion in atomic contexts
drm/i915: Reset GMBUS controller after NAK
The one thing which is still troublesome is disconnecting the external
VGA while suspended, leaving the internal display blank on resume.
However this was always flaky in maverick, and is easily fixed by
switching to a text console and back.
(I don't have a docking unit available to test other
For me (on a Thinkpad x201), it appears that this commit causes the hang
on resume:
drm/i915: Use ACPI OpRegion to determine lid status
I'm using the current Natty kernel (v2.6.38-8.42) plus the drm/i915
changes from the Ubuntu git repo for 2.6.38-9 and -10, plus the patches
in the branch
I'm still curious why it would be that the issue isn't present in a clean
install of Xubuntu 11.04, but is a problem with Ubuntu 11.04, Fedora 15, and
Linux Mint 11.
On Sun, Jun 12, 2011 at 19:32, Martin Pool martinp...@gmail.com wrote:
That package does have the drawback that suspend/resume is
Martin's packages also got the external display working for me.
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Title:
[arrandale] desktop is messed up (goes black)
That package does have the drawback that suspend/resume is broken: the
machine sits there with the screen (or both screens) off, and
unresponsive to keyboard input. This was working correctly in the
stock natty packages.
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I've had a pretty confusing time trying to get my new x220 working with
an external display. Using Martin's packages, I have the external
monitor working when the internal display is blanked (through an
ultrabase, but I don't /think/ that's making a difference). Happy to
test kernels with
7f58aabc369014fda3a4a33604ba0a1b63b941ac shows some flickering on the
external monitor when first logging in to metacity/classic, but it does
work reliably in all modes.
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6ee3b5a12740eddc5a76e130b6cc7cc64468d1f7 also seems ok, and according to
git bisect that might be the patch that fixes it. From the description
it seems somewhat plausible. I am going to try one of the parent
revisions too and see if they reliably break.
On f0c8602 which is the immediate parent of this revision, when I boot
with an external screen attached, I don't see any display on the
internal panel, and it doesn't show up in the monitors control panel.
That's the same breakage I described affecting rc1 in comment 57. So
this is at least one
http://kernel.ubuntu.com/git?p=lexical/lexical-
natty.git;a=shortlog;h=refs/heads/lp788026
if you need more than those, please let us know
** Changed in: xserver-xorg-video-intel (Ubuntu)
Assignee: (unassigned) = Timo Aaltonen (tjaalton)
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Ubuntu-2.6.38-9.43-8-g930a188 from that branch seems to work well for
me, thanks!
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Title:
[arrandale] desktop is messed
I spoke a bit too soon.
Timo's branch is a bit better in that the external display works, but
not quite right. Some observations:
* booting with the external display connected shows the boot and login screens
on both, and then my session comes up only on the external display
* I can use the
If you want me to test anything else, or bisect between two particular
points, let me know.
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Title:
[arrandale] desktop
I put an amd64 package of that branch into
http://sourcefrog.net/tmp/1y/745112/ in case other people want to try
it.
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Martin, thanks for testing! I meant building the whole branch, which is
what you did. Now we'll need to add the backported patches to the SRU
queue.
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Duh, didn't read but the couple of last comments. So it would be nice to
know which of these bugs are regressions due to these patches, and which
have been there before.
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tjaalton and bryceh suggested bisecting using the packages built from
mainline rather than building from scratch.
Using http://kernel.ubuntu.com/~kernel-ppa/mainline/
v2.6.39-rc1-natty when the external monitor is plugged in will _only_
use the external monitor; the monitors control panel
and rc3 also seems ok.
I will try again on a bisect between rc1 and rc3.
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Title:
[arrandale] desktop is messed up (goes
rc4 shows some visual corruption after resume from suspend, which can be
cleared off by going to vt1 and back.
git bisect start v2.6.39-rc1 v2.6.39-rc4 drivers/gpu/drm
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The fix seems to be prior to upstream
9bb09fa1b5b07459279301ac6220d575f307597b
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Title:
[arrandale] desktop is messed up
I tested with Oneiric's kernel http://packages.ubuntu.com/oneiric/linux-
image-2.6.39-3-generic running natty userspace, and so far it seems to
be working ok in either internal, external, or mirrored mode. In side-
by-side mode I have trouble with regions of the screen appearing black
but I
From Bryce's #29, I tested acelan's kernel from
http://people.canonical.com/~acelan/bugs/lp753189/ linux-
image-2.6.38-8-generic
At first this looked promising because the machine did start up with
both displays working, and I could switch it to using only the external
display. However, after
Oneiric's 2.6.39-3-generic by contrast seems robust across multiple
mode switches. In 2d classic (metacity) mode, it does not have any
problems with black areas on the screen.
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Thinkpad x60s. Broken after upgrading to 11.04. Almost always when I
switch to external monitor most of the screen is black. Sometimes the
entire screen is black except for the top bar. Very occasionally I can
switch to the external monitor fine ( 10% of the time).
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I will try the bisection.
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Title:
[arrandale] desktop is messed up (goes black) when laptop is docked
with two
Thinkpad X201s worked perfectly on 10.10, but is broken on 11.04. Every
time I dock/undock, plug/umplug monitor or projector, screen goes blank.
I can switch to a virtual terminal; sometimes I can restart GDM
successfully, sometimes I have to do a reboot.
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I have been bothered by this flickering and automatic display switching
issue since installation of Natty (also previously when i upgraded from
Maverick to Natty). I am glad to find this bug here, and tried some of
the proposed solutions (mainline, backport to maverick). None of them
really works
To re-emphasize what I said in comment #28:
The next step for this bug is that we need to narrow down what patch in
the upstream kernel provides the fix. The best way to achieve this is
via doing a git bisection search. See
https://wiki.ubuntu.com/Kernel/KernelBisection.
From the comments it
@Bryce: According to that page,
Required knowledge and tools
The rest of this page assumes that you know how to fetch a kernel from the
Ubuntu git repository, and build it, and that you have basic git skills. If you
can't do that yet, try starting with this wiki page.
So there's the
I also had this problem with an x201s. The display on the laptop alone
was fine, but on attempting to plug in an external display, both
displays go black. I downgraded my linux kernel from 2.6.38-9 to
2.6.35-22-generic from the maverick repositories and this seems to have
fixed the problem.
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In Natty 32bit with Unity when I plug in a beamer, the beamer is recognized,
and you can see the panel at the top, but not the wallpaper, so the rest is
black. Putting windows via drag and drop to the beamers side makes me see the
grabbing hand cursor, but not the window itself. Changing
Intel D820 here with Intel Mobile GM965/GL960 Integrated Graphics
Controller. I use a docking station with two identical HP LA1951g
monitors attached, one VGA, one DVI with a native resolution of 1280 x
1024 @ 60 Hz.
First, Natty failed to detect the native resolution of VGA monitor. It
can only
Errata: on my previous post Intel D820 should read Dell 820. My
apologies.
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Title:
[arrandale] desktop is messed up
Follow up on my previous post (#42) .
Thinkpad Edge 14:
kernel 2.6.39-rc4 (x86) has fixed the issue.
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Title:
I installed 2.6.29 from the PPA, this fixed the problem in ubuntu
classic. In the unity desktop with 2.6.39 I can have choose one monitor
only, with two monitors I have issues where the workspace is not the
same size as the screen.?field.comment=On a Lenovo Thinkpad Edge,
installing 2.6.39 from
Had a similar bug on my ThinkPad x201.
Installing 2.6.39 kernel as suggested solved the frequent crashes, but certain
areas of the screen still remained unusable.
Finally, the workaround I found for this was to delete ~/.config/monitors.xml
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I also had to delete my monitors.xml on my thinkpad x201. I've also
found that putting one display above the other is a recipe for disaster
- Chrome especially freaks out and makes a short window that can't be
expanded, rendering it useless, and all my windows lose their titlebars
routinely.
I have a similar issue on my Thinkpad Edge 14 (Natty 32bit), when
working in the Classic session.
Upon plugging in an external monitor [via HDMI], (or when booting with
it plugged, after entering the session), the screen goes black (no mouse
pointer either), with the external monitor picking no
** Tags added: oneiric
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Title:
[arrandale] desktop is messed up (goes black) when laptop is docked
with two external
[I've marked this bug for inclusion in our oneiric bug queue. While
technically this bug has not been re-confirmed against oneiric, I feel
it is worth continued development attention. We will need to ask that
it be re-confirmed once oneiric is further along, perhaps once we get
closer to alpha.]
I installed kernel 2.6.39 and it too fixed the problem on my ThinkPad
T410 such i can use it with my docks again, with different
configurations.
But the machine has been significantly slower and it has introduced
crashes. Is this because of the PPA software? Debug mode or something
the like?
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Is it worth updating the title to clarify this bug also apparently
covers cases where just a single monitor doesn't work (as some of the
bugs duped to this complain.)
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I've just installed linux-headers-2.6.39-020639rc4 and this fixed the
problem for me!
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Title:
[arrandale] desktop is
I installed kernel 2.6.36-020636.201010210905_amd64 what also wokrd for
me. I can conveniently switch between internal and external monitors.
Docking/Undocking and weaking up from suspend works which is a pain with
the 38er kernel.
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I installed kernel 2.6.39-994.201104200727 from http://kernel.ubuntu.com
/~kernel-ppa/mainline/drm-intel-next-proposed/. This solves the blank
screen issue when an external monitor is connected (ThinkPad T410s with
Natty).
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Dear Bruce!
I tried your kernel and experienced exactly the same problems as with the stock
ubuntu kernel.
Could anyone please confirm this?
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Switch back to kernel 2.6.35-28 from maverick solved most issues for me.
I can recomend this as a workaround.
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Title:
** Description changed:
Binary package hint: unity
(I'm not sure where in the stack this problem really is, so I'm guessing
and picking on unity)
I have a Lenovo T410s laptop with Intel graphics and I use it with a
dock with two 1920x1200 monitors connected. I'm running
I have duped bugs #750259, #734756, and #747205 here.
Bug #737891 also exhibits this same issue but also conflates it with
another issue where creating a screen 4096 wide exceeds the max texture
width (as per the linked upstream bug), so I'm going to let that bug
focus on that particular issue
On lp #747205 we discovered by creating a new user account, that having
certain RANDR operations present in monitors.xml would trigger it,
presumably because gnome-settings-daemon would pick up those
configuration settings and try applying them, triggering an underlying
bug in RANDR. Perhaps
Bug #761236 is the broken-out portion of bug #737891 which is this
specific issue. On that report, it was found that kernel
2.6.39-0.4~20110419 resolved it, but the elderberry PPA with the -intel
workaround did not.
** Changed in: linux (Ubuntu)
Status: New = Triaged
** Changed in: linux
That should capture all the background on the various instances of this
bug that I've been working with people on. Basically, there are some
variations in symptoms but all of the reports are particular to
Arrandale, occur in relationship with setting up external screens
(perhaps something
An alternative thing to investigate: There is another bug particular to
Sandybridge, with roughly similar symptoms to this one, which has
already been git bisected and found a candidate patch. The flagged
patch with the fix appears to also affect Arrandale, so I have a hunch
it *might* also
I was having a very similar issue with a thinkpad X201 (see
https://bugs.launchpad.net/bugs/771344 - which is now duped here)
However, booting with the monitors plugged in made no difference - I
would go to the black screen regardless when I logged in an existing
account.
However, a freshly
** Changed in: xserver-xorg-video-intel (Ubuntu)
Importance: Undecided = Medium
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Title:
[arrandale] desktop is messed
With linux-image-2.6.39-999-generic_2.6.39-999.201104201108_amd64.deb
docking/undocking seems to work pretty well. There is a bit of a delay
in switching, but even through a few cycles with unity running, I was
able to switch successfully between the internal LCD and the two
external monitors.
I
Hi Roland, that's a good eye. It is the kernel modesetting portion of
the stack which allocates framebuffers, and that does tend to indicate
where in the core logic things may be going awry.
Since you're results with the elderberry PPA sound mixed, it's sounding
to me like it would not be worth
I don't think the elderberry stuff is related to my issue -- I see a
monitor stuck with no signal because (if I understood correctly) KMS got
confused and forgot about it. Probably fixing KMS would fix my
problems.
Is there some i915 tracing I could turn on to figure out what is confusing the
On Thu, Apr 21, 2011 at 12:27:20AM -, Roland Dreier wrote:
I don't think the elderberry stuff is related to my issue -- I see a
monitor stuck with no signal because (if I understood correctly) KMS got
confused and forgot about it. Probably fixing KMS would fix my
problems.
Is there
** Summary changed:
- [arrandale] desktop is messed up (goes black) when laptop is docked (x86_64)
+ [arrandale] desktop is messed up (goes black) when laptop is docked with two
external 1920x1200 monitors (x86_64)
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Roland, thanks for that.
Alright, here is what I think is happening. Arrandale graphics cards
have a hardware limitation of a max texture buffer size of 4096x4096.
What this means is that compositing will work only if the total screen
width is 4096 or less. Over that, and the GPU can lock up or
Bruce, thanks for all the info. I will do some more testing today.
One clarification though: when I get in the black screen + mouse pointer
situation, my machine is not hung. In fact the mouse pointer is still
responsive, I can log in via network, etc. It just that I lose the X
root
Bryce, first off, sorry for mistyping your name ;)
I did a bit more testing, and I tried the classic/no effects login
again. If I start undocked and dock, I do get the black
screen/responsive mouse pointer. However, if I log in with classic/no
effects *and* do xrandr --output LVDS1 --off and
Hi Roland, thanks for the quick response.
Regarding your clarification, yes despite how it may seem, blank screen
with moving mouse cursor and X not responding to input, but network
login works is the prototypical set of symptoms that go with a GPU
hang. The kernel itself is ok, which is why you
I added that ppa and updated, and did a bit more testing. It seemed to
work a bit better, though not in the way I would have expected.
classic/no-effects: I started undocked, and actually got docking once to
work perfectly (both monitors lit up, desktop displayed on both).
However when I
I just noticed something while looking at my Xorg.0.log after a couple
of dock/undock cycles leading to the black screen. I'm attaching the
full log, but what I noticed was:
boot up undocked:
[ 5.897] (II) intel(0): Allocated new frame buffer 1472x900 stride 6144,
tiled
matches a 1440x900
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