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.
Experience based on Macbook Pro (8,1)
On Wed, Jan 14, 2015 at 12:45 PM, Uday P. Khedker uday@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.
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Dr. Uday Khedker, Professor Department of Computer Science & Engg. IIT Bombay, Powai, Mumbai 400 076, India. Email : uday@cse.iitb.ac.in Homepage: http://www.cse.iitb.ac.in/~uday Phone : 91 (22) 2572 2545 x 7717, 91 (22) 2576 7717 (Direct)
On 01/16/2015 11:50 AM, Pratik Vyas wrote:
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.
Yes, looks like Apple has introduced this change recently.
Thanks and regards,
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?
On 01/21/2015 11:29 AM, Pratik Vyas wrote:
- 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?
No. I mean, the default desktop screen showed up on the monitor but I couldn't change it.
Uday Khedker.
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Pratik Vyas -
Uday Khedker -
Uday P. Khedker