If you have reset the PRAM and are still getting the error, shut down the computer, power cycle the Cinema Display, then turn the computer back on. This alert will only appear on displays built in or later, which require an external power adapter. In September , Apple introduced a line of flat panel computer monitors, called the Apple Cinema Display.
The monitor was initially sold alongside the older line of Studio Displays; however, the new line eventually replaced them. In July , Apple introduced its successor, the Thunderbolt Display.
Since that moment on, the Cinema Display was considered outdated by consumers. It was even removed from the Apple Store website in August of Apple offered , , , , and inch sizes, with the last model being a inch size with LED backlighting. There have been three designs for the Cinema Display; one featured polycarbonate plastic, while the other two featured anodized aluminum.
The first monitors were designed to match the colorful plastic of both the Power Mac G3 and G4. The second revisions were designed to match the more professional aesthetics of both the Power Mac G5 and PowerBook G4.
Apple 30" Cinema Display - Resolution Issue
The last available design matched the uni-body laptops, which were released in October of On June 28, , Apple introduced a redesigned line of Cinema Displays, along with a new inch model. Either an alternative stand or a wall mount could be used with a VESA mount adapter kit which was sold separately. The inch model was also discontinued in February , leaving the inch display as the only model available for sale.
Currently, no Macintosh is sold with a dual-link DVI port. All Power Mac G5, PowerBook G4 and Mac Pro models since the release of the said display are capable of supporting the resolution without the use of any adapters.
The Discrete MacBook Pros are also capable of driving the inch display, while all Macs released after October require an additional adapter. The first displays were designed to match the colorful plastic of the Power Mac G3 and later the Power Mac G4 , while the second revisions were designed to match the aluminum aesthetics of the Power Mac G5 and PowerBook G4. The last available design matched the unibody laptops released in October The inch model, dubbed the "Cinema HD Display," was introduced on March 20, , and supported full p playback on a x pixel display.
On June 28, , Apple introduced a redesigned line of Cinema Displays, along with a new inch model that, like the inch model, carried the "Cinema HD Display" name. The new models had an anodized aluminum enclosure that matched Apple's high-end lines of professional products.
Apple Cinema Display showing low resoluti… - Apple Community
An alternative stand or a wall mount could be used with a VESA mount adapter kit that was sold separately. Though the display enclosures had not been redesigned for a long period of time, several "silent" improvements were made to the brightness levels and contrast ratios.
Currently, no Macintosh is sold with a dual-link DVI port. However, all current Macs come with a Thunderbolt connector which can be used with a separately sold adapter  to run the inch display. Discrete MacBook Pros are also capable of driving the inch display, while all Macs released after October require an additional adapter.
On October 14, , the inch Cinema HD Display was replaced with a inch model made with aluminium and glass, reflecting the appearances of the latest iMac, MacBook Pro and unibody MacBook designs. The display features a built-in iSight camera, microphone and dual speaker system. A MagSafe cable runs from the back of the display for charging notebooks. This display is only officially compatible with Macs that have the Mini DisplayPort connector. A third-party converter must be used in order to use this display with older Macs. With the introduction of LCD panels, the matte, anti-glare screen panels were retired, except for the 30" Cinema Display.
Apple had already moved away from matte screens in its line of iMac desktop computers on August 7, Apple no longer offers any equipment with a matte, anti-glare screen after the 15" non-Retina MacBook Pro was discontinued in October This has caused concern among users who want matte screens for their particular area of work, particularly graphic designers, photographers and users who extensively view their screens. The Wall Street Journal referred to Apple's removal of the matte screen as one of Apple's worst design decisions.
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