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1.5. Monitor compatibility

There are hardware limitations affecting HDMI support and issues might be encountered when using the V2M-Juno motherboard with certain monitors.

  • On some monitors, the native resolution is not always achieved, and the V2M-Juno motherboard output degrades to 1024×768. On the next reboot, there is a chance that the native resolution might be selected.

  • For some display modes on some monitors, the display can periodically lose synchronization, causing a brief picture loss each time this occurs. The ratio of display time to blanking time varies significantly across monitors and modes.

  • On some monitors, the V2M-Juno motherboard is unable to establish a working display mode.

The following table summarizes the results for monitors that ARM has tested.

Table 1.1. Monitor compatibility with the V2M-Juno motherboard
Manufacturer Model Native resolution Native resolution achieved Fallback to 1024x768 @ 60Hz achieved No display achieved
Success rate Blanking occurs Success rate Blanking occurs
BenQ GL2460 1920×1080@60Hz 91% Yesa 0% n/a 9%
BenQ GL2450 1920×1080@60Hz 100%[a] Yesa n/a n/a n/a
BenQ G2200WT 1680×1050@60Hz 100% No n/a n/a n/a
BenQ BL2201 1680×1050@60Hz 100% No n/a n/a n/a
Dell P1911 1440×900@60Hz 100% No n/a n/a n/a
HP L1940T 1280×1024@60Hz 100% No n/a n/a n/a
Iiyama ProLite E511S 1600×1200@60Hz 100% No n/a n/a n/a
LG LED 22M35 1920×1080@60Hz 100% Yes[b] n/a n/a n/a
NEC EA274WMi 2560×1440@52.1Hz 100% Yesa n/a n/a n/a
NEC LCD2070NX 1600×1200@60Hz 100% No n/a n/a n/a
Samsung SyncMaster S22B370 1920×1080@60Hz 0% n/a 0% n/a  
Samsung SyncMaster SA850 2560×1440@60Hz 0% n/a 100%[c] No n/a

[a] Requires the kernel command-line option: video=DVI-D-1:1920×1080R@60

[b] No blanking occurs when invoking the kernel with a video command-line option that includes an R flag. For example, video=DVI-D-1:1920×1080R@60

[c] The Samsung SyncMaster SA850 is available for purchase at the time of writing and works well when using 1024×768 or half of the native resolution, but only if the following kernel command-line option is provided to force the resolution. ARM recommends adding this option to get the monitor to work:

video=DVI-D-1:1280x720@60


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