Monitor at DisplayPort not detected

Can you give the output of:

sudo lshw -C display; lsb_release -a; uname -a; xrandr

Thanks

Of course: http://pastebin.com/A3MniJ4M

Thanks to you!

2048x1152 is what you are using. Is this not what you use?

1.$ sudo lshw -C display
2. *-display:0
3. description: VGA compatible controller
4. product: 4 Series Chipset Integrated Graphics Controller
5. vendor: Intel Corporation
6. physical id: 2
7. bus info: pci@0000:00:02.0
8. version: 03
9. width: 64 bits
10. clock: 33MHz
11. capabilities: msi pm vga_controller bus_master cap_list rom
12. configuration: driver=i915 latency=0
13. resources: irq:45 memory:fe400000-fe7fffff memory:e0000000-efffffff ioport:cc00(size=8)
14. *-display:1 UNCLAIMED
15. description: Display controller
16. product: 4 Series Chipset Integrated Graphics Controller
17. vendor: Intel Corporation
18. physical id: 2.1
19. bus info: pci@0000:00:02.1
20. version: 03
21. width: 64 bits
22. clock: 33MHz
23. capabilities: pm bus_master cap_list
24. configuration: latency=0
25. resources: memory:fe900000-fe9fffff
26.
27.$ lsb_release -a
28.No LSB modules are available.
29.Distributor ID: Ubuntu
30.Description: Ubuntu 12.10
31.Release: 12.10
32.Codename: quantal
33.
34.$ uname -a
35.Linux desktop 3.5.0-18-generic #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
36.
37.$ xrandr
38.Screen 0: minimum 320 x 200, current 2048 x 1152, maximum 8192 x 8192
39.VGA1 connected 2048x1152+0+0 (normal left inverted right x axis y axis) 597mm x 336mm
40. 2048x1152 59.9*+
41. 1920x1080 60.0
42. 1600x1200 65.0 60.0
43. 1680x1050 60.0
44. 1680x945 60.0
45. 1400x1050 85.0 74.9 60.0
46. 1600x900 60.0
47. 1280x1024 85.0 75.0 60.0
48. 1440x900 84.8 75.0 59.9
49. 1280x960 85.0 60.0
50. 1366x768 60.0
51. 1360x768 60.0
52. 1280x800 84.9 74.9 59.8
53. 1152x864 75.0
54. 1280x768 84.8 74.9 59.9
55. 1024x768 85.0 75.1 70.1 60.0 43.5
56. 1024x576 60.0
57. 800x600 85.1 72.2 75.0 60.3 56.2
58. 848x480 60.0
59. 640x480 85.0 72.8 75.0 60.0
60. 720x400 85.0 70.1
61. 640x400 85.1
62. 640x350 85.1
63.HDMI1 disconnected (normal left inverted right x axis y axis)
64.DP1 disconnected (normal left inverted right x axis y axis)
65.HDMI2 disconnected (normal left inverted right x axis y axis)
66.DP2 disconnected (normal left inverted right x axis y axis)

Yes, I'm currently using 2048x1152, the maximum that the RGB port can generate for this monitor. But the monitor's resolution is 2560x1440. The GMA X4500's maximum resolution is 1900x1200 via DVI-D, 2048x1536 via RBG and 2560x1600 via DisplayPort.

As you can see, only DisplayPort can generate the required resolution.

I should maybe also note that e.g. the BIOS is displayed when the monitor is connected via DisplayPort, i.e. it's no hardware problem.

This question was expired because it remained in the 'Needs information' state without activity for the last 15 days.

As this question expired due to missing information: Could you please tell me which information is still missing so that I can provide it?

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

Still open.

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

Still open.

This question was expired because it remained in the 'Open' state without activity for the last 15 days.

i have exactly the same problem.