Might be true.
This is the very same X61 tablet here.
- Jonas
dmg <d...@uvic.ca> writes:
> Bad/Good news:
>
> I swapped the drive from a Lenovo X61T (where the bug is present) to
> the Lenovo X201T.
>
> In the X201T the bug is not present.
>
> So it is almost certainly related to the video card driver.
>
> I am attaching the log from X for both laptops.
>
> --dmg
>
>
>
> On Tue, May 10, 2011 at 1:03 AM, Jonas <co...@online.de> wrote:
>>
>> Hi,
>>
>> updates:
>>
>> 1. --sync doesn't help
>>
>> 2. gdk_display_sync(..) at the printf position doesn't change anything
>> either
>>
>> 3. to clarify: i'm only hit in the rotated state
>>
>> 4. further observations on printf: minimizing or moving to another
>> terminal does not affect that the bug isn't shown (but i'm using
>> awesome as window manager, so i don't know if this is connected)
>>
>> but: disconnecting xournal from the terminal via disown, or starting
>> it with "xournal > output" leads to the bug manifesting again.
>>
>> "good" thing about the latter is that i can produce debug output,
>> which I will during the day.
>>
>>
>> Cheers,
>>
>> Jonas
>>
>> Denis Auroux <aur...@math.mit.edu> writes:
>>
>>> Hi Jonas,
>>>
>>> Very interesting, thank you very much for the insightful message!
>>>
>>> Based on the packages updated, this seems to be an X server related
>>> issue indeed. I'd say it's either the server itself (there might have
>>> been changes in the order in which events/requests are processed,
>>> causing some deadlock in the processing either of pointer motion
>>> events or of display refresh requests), or the intel driver (because
>>> the bug only hits when rotated!). The wacom driver would have been
>>> another candidate normally, but since the bug has been reported by
>>> others to happen even when drawing with a mouse, it's not too likely.
>>>
>>> It's going to be very hard to debug though, in part because it seems
>>> that trying to produce debugging output will by itself cause the bug
>>> to disappear...
>>>
>>> Question: does the bug still appear if you run "xournal --sync"
>>> instead of the usual? (This makes X server calls synchronous, so in
>>> case the issue is a conflict between event processing and rendering
>>> requests, this might help...). If --sync fixes the bug, can you
>>> further assess whether adding the line
>>>
>>> gdk_display_sync(gdk_display_get_default());
>>>
>>> at the place where you inserted the printf() would be sufficient
>>> (perhaps with a lower performance cost than --sync, since it'd
>>> synchronize things only in the motion event processing code) ?
>>>
>>> Sorry I'm not testing myself, but given the obsolescence of my current
>>> distribution, I'd probably have to download an entire distribution
>>> image to do any testing (and might not even be hit by the bug if it's
>>> dependent on hardware or caused by patches to the X server...).
>>>
>>> Denis
>>>
>>>
>>>
>>> On 05/09/2011 04:36 PM, Jonas wrote:
>>>> Hey,
>>>>
>>>> i've been hit by the same bug.
>>>>
>>>> I noted mostly the update of xf86-input-wacom from 0.10.8 to 0.10.9, but
>>>> there might be another candidate.
>>>>
>>>> I then also commented #define ENABLE_XINPUT_BUGFIX to no effect.
>>>>
>>>> But, when I then uncommented #define INPUT_DEBUG, the bug
>>>> disappeared.
>>>>
>>>> By playing around I narrowed it down to: As soon as there is something
>>>> which outputs a newline to stdout in on_canvas_motion_notify_event in
>>>> xo-callbacks.c, there are no further drawing delays.
>>>>
>>>> To be explicit: if I just apply the following patch, the bug does not
>>>> occur (although the side-effect of all those newlines is bothersome)
>>>>
>>>> diff -r1.29 xo-callbacks.c
>>>> 2699a2700,2701
>>>>> printf("\n");
>>>>>
>>>>
>>>> I have no idea, why this happens; i'm just reciting what i found out.
>>>> But I hope, it helps you kill it for real. ;D
>>>>
>>>> All the best and thanks for xournal,
>>>>
>>>> Jonas
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> [2011-04-13 15:25] upgraded audacity (1.3.12-3 -> 1.3.13-1)
>>>> [2011-04-13 15:25] upgraded bluedevil (1.0.3-1 -> 1.0.4-1)
>>>> [2011-04-13 15:25] upgraded crda (1.1.1-1 -> 1.1.1-3)
>>>> [2011-04-13 15:25] upgraded eventlog (0.2.12-1 -> 0.2.12-2)
>>>> [2011-04-13 15:25] upgraded filesystem (2010.12-1 -> 2011.04-1)
>>>> [2011-04-13 15:25] upgraded fixesproto (4.1.2-1 -> 5.0-1)
>>>> [2011-04-13 15:25] upgraded gstreamer0.10-good (0.10.27-2 -> 0.10.28-1)
>>>> [2011-04-13 15:25] upgraded gstreamer0.10-good-plugins (0.10.27-2 ->
>>>> 0.10.28-1)
>>>> [2011-04-13 15:25] upgraded xz (5.0.1-1 -> 5.0.2-1)
>>>> [2011-04-13 15:25] upgraded imagemagick (6.6.9.1-1 -> 6.6.9.4-1)
>>>> [2011-04-13 15:25] upgraded libdrm (2.4.23-2 -> 2.4.25-1)
>>>> [2011-04-13 15:25] upgraded libgl (7.10.1-1 -> 7.10.2-2)
>>>> [2011-04-13 15:25] upgraded intel-dri (7.10.1-1 -> 7.10.2-2)
>>>> [2011-04-13 15:25] upgraded lftp (4.2.1-1 -> 4.2.2-1)
>>>> [2011-04-13 15:25] upgraded libtasn1 (2.8-1 -> 2.9-1)
>>>> [2011-04-13 15:25] upgraded libtiff (3.9.4-1 -> 3.9.5-1)
>>>> [2011-04-13 15:25] upgraded libxfixes (4.0.5-1 -> 5.0-1)
>>>> [2011-04-13 15:25] upgraded mesa (7.10.1-1 -> 7.10.2-2)
>>>> [2011-04-13 15:25] upgraded mlocate (0.23.1-2 -> 0.24-1)
>>>> [2011-04-13 15:25] upgraded namcap (2.8.2-1 -> 3.0.6-1)
>>>> [2011-04-13 15:25] upgraded ncurses (5.8-1 -> 5.9-1)
>>>> [2011-04-13 15:25] upgraded ngrep (1.45-5 -> 1.45-6)
>>>> [2011-04-13 15:25] upgraded sudo (1.8.0-4 -> 1.8.1-1)
>>>> [2011-04-13 15:25] upgraded vlc (1.1.8-2 -> 1.1.9-1)
>>>> [2011-04-13 15:25] upgraded xf86-input-evdev (2.6.0-2 -> 2.6.0-3)
>>>> [2011-04-13 15:25] upgraded xf86-input-synaptics (1.4.0-1 -> 1.4.0-2)
>>>> [2011-04-13 15:25] upgraded xf86-input-wacom (0.10.8-2 -> 0.10.9-1)
>>>> [2011-04-13 15:25] upgraded xf86-video-intel (2.14.0-3 -> 2.14.903-1)
>>>> [2011-04-13 15:25] upgraded xkeyboard-config (2.1-1 -> 2.2.1-1)
>>>> [2011-04-13 15:26] upgraded xorg-server-common (1.9.4.901-1 ->
>>>> 1.10.0.902-1)
>>>> [2011-04-13 15:26] upgraded xorg-server (1.9.4.901-1 -> 1.10.0.902-1)
>>>> [2011-04-13 15:26] upgraded xsel (1.2.0-2 -> 1.2.0-3)
>>>> [2011-04-13 15:26] upgraded xvidcore (1.3.0-1 -> 1.3.1-1)
>>>>
>>>>>
>>>>> On 05/07/2011 10:58 AM, dmg wrote:
>>>>>> This might or might not be related.
>>>>>>
>>>>>> I installed Ubuntu 11.04 on an X61T and xournal in some cases the
>>>>>> strokes are not displayed
>>>>>> when created (but they are saved). Only when the page is refreshed.
>>>>>>
>>>>>> I didn't really look much into it, but it was odd, given that I use
>>>>>> in
>>>>>> Ubuntu 10.10.
>>>>>>
>>>>>> --dmg
>>
>>
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