14 Jan
2015
14 Jan
'15
12:45 p.m.
I am using Ububtu 14.04 on my mac book because I wanted a smooth transition from my lenovo
t61 and I am happy with the transition. However, there are a couple of problems for which
I am looking for suggestions.
* I am unable to get the display through vga out for connecting to a projector. Has
anyone tried it?
* It appears that apple has moved the webcam from usb based interface to PCI and so I am
unable to use the built-in webcam (an external webcam works fine) in Ubuntu. This is
lesser of the problem but would appreciate hearing any suggestions for this too.
Thanks and regards,
Uday Khedker.
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signature.html
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Dr. Uday Khedker, Professor
Department of Computer Science & Engg.
IIT Bombay, Powai, Mumbai 400 076, India.
Email : uday(a)cse.iitb.ac.in
Homepage: http://www.cse.iitb.ac.in/~uday
Phone : 91 (22) 2572 2545 x 7717, 91 (22) 2576 7717 (Direct)
16 Jan
16 Jan
11:50 a.m.
Experience based on Macbook Pro (8,1)
On Wed, Jan 14, 2015 at 12:45 PM, Uday P. Khedker <uday(a)cse.iitb.ac.in> wrote:
I am using Ububtu 14.04 on my mac book because I
wanted a smooth transition
from my lenovo t61 and I am happy with the transition. However, there are a
couple of problems for which I am looking for suggestions.
* I am unable to get the display through vga out for connecting to a
projector. Has anyone tried it?
I faced this issue with some projectors. Solution was to run xrandr manually.
xrandr --addmode DP1 1024x768
xrandr --output DP1 --mode 1024x768 --rate 60
(does your macbook had display port as DP1 too?)
* It appears that apple has moved the webcam from usb
based interface to
PCI and so I am unable to use the built-in webcam (an external webcam works
fine) in Ubuntu. This is lesser of the problem but would appreciate hearing
any suggestions for this too.
I think 6,1 would be an older system because my iSight camera worked
out of the box with uvc.
Thanks and regards,
Uday Khedker.
--
signature.html
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Dr. Uday Khedker, Professor
Department of Computer Science & Engg.
IIT Bombay, Powai, Mumbai 400 076, India.
Email : uday(a)cse.iitb.ac.in
Homepage: http://www.cse.iitb.ac.in/~uday
Phone : 91 (22) 2572 2545 x 7717, 91 (22) 2576 7717 (Direct)
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21 Jan
21 Jan
9:34 a.m.
On 01/16/2015 11:50 AM, Pratik Vyas wrote:
Yes, looks like Apple has introduced this change recently.
Thanks and regards,
Uday Khedker.
Experience based on Macbook Pro (8,1)
I faced this issue with some projectors. Solution was to run xrandr manually.
xrandr --addmode DP1 1024x768
xrandr --output DP1 --mode 1024x768 --rate 60
(does your macbook had display port as DP1 too?)
Yes it has DP1 but it appears that DP1 is disconnected as soon as I run
xrandr. More detailed observations are:
* When I restart the machine, xrandr detects and projector/monitor on
DP1 as connected. As soon as try anything through
xrandr/lxrandr/arandr, DP1 output gets disconnected.
* I tried using --noprimary and the monitor remained connected. But
when I tried to change its resolution, it once again got disconnected.
* I tried setting DP1 as --primary and now the monitor is connected
but laptop screen is switched off. However, I am unable to do
anything because the screen resolution does not match and I am
unable to see an open a terminal on the monitor.
Any suggestions on what I should try?
* It appears that apple has moved the webcam
from usb based interface to
PCI and so I am unable to use the built-in webcam (an external webcam works
fine) in Ubuntu. This is lesser of the problem but would appreciate hearing
any suggestions for this too.
I think 6,1 would be an older system because my
iSight camera worked
out of the box with uvc.
11:29 a.m.
* When I restart the machine, xrandr detects and
projector/monitor on
DP1 as connected. As soon as try anything through
xrandr/lxrandr/arandr, DP1 output gets disconnected.
* I tried using --noprimary and the monitor remained connected. But
when I tried to change its resolution, it once again got disconnected.
* I tried setting DP1 as --primary and now the monitor is connected
but laptop screen is switched off. However, I am unable to do
anything because the screen resolution does not match and I am
unable to see an open a terminal on the monitor.
In my case, it didn't even detect. The xrandr commands I used forced
it to display. I used only mirror mode to be safe (and I guess it's
the default)
Any suggestions on what I should try?
The above commands didn't work?
11:37 a.m.
On 01/21/2015 11:29 AM, Pratik Vyas wrote:
No. I mean, the default desktop screen showed up on the monitor but I
couldn't change it.
Uday Khedker.
* When I
restart the machine, xrandr detects and projector/monitor on
DP1 as connected. As soon as try anything through
xrandr/lxrandr/arandr, DP1 output gets disconnected.
* I tried using --noprimary and the monitor remained connected. But
when I tried to change its resolution, it once again got disconnected.
* I tried setting DP1 as --primary and now the monitor is connected
but laptop screen is switched off. However, I am unable to do
anything because the screen resolution does not match and I am
unable to see an open a terminal on the monitor.
In my case, it didn't even detect. The xrandr commands I used forced
it to display. I used only mirror mode to be safe (and I guess it's
the default)
Any suggestions on what I should try?
The above commands didn't work?
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Uday P. Khedker