Most users report second iMac update fixes flickering
Don't bet on it, others warn; some say 27-in. screen issues remain
Computerworld - Apple's second firmware update for 27-in. iMacs seems to have fixed the flickering display problems, according to most users' reports on the company's support forum.
A minority, however, maintained that the update did not stop their screens from flickering.
Apple issued the second firmware fix in six weeks on Monday, saying it was meant to "address issues that may cause intermittent display flickering." In late December, Apple released a 27-in. iMac graphics firmware upgrade that was also pitched as a fix for flickering. Most users that reported the results of that update, however, said that it had not solved their problems.
This time around, the majority of users who posted their findings on the enormous support thread dedicated to iMac display problems said that Monday's firmware update had put an end to flickering.
"So after one night of having applied the latest firmware update, I have not seen any flickering," said a user identified as "jmczaja" on the thread. "Hopefully, the results will hold up."
"I have had the flickering problem from the start, and it was quite consistent in appearing every time the iMac had been turned on for about an hour," echoed Christian Hansen. "I could then cure it by letting the display sleep for a few seconds. After the update, which I did earlier today, I have not seen any flicker."
Some who crowed that the update had done the trick even called for the thread to be closed and the case considered solved, a move that raised hackles. "It is way too early to fully declare victory regarding the flickering issue, and this thread should remain open until such time when sufficient evidence has been presented, so that everyone is fully convinced," said Warren Beasley.
In fact, a small number of users -- fewer than half a dozen as of mid-day Wednesday -- claimed that the fix had done their iMacs no good. "Applied the new patch last night, and after a few hours, flickering started happening again," said Stephen Stark early today.
Whether coincidence or not, Apple this week reduced the delay between 27-in. iMac ordering and shipping from three to two weeks, and told the Wall Street Journal that it had never stopped production of its most expensive iMac, as a French blog asserted over the weekend.
Apple has been close-mouthed about the iMac problems -- not surprising, given the company's penchant for secrecy -- but it has commented publicly on two occasions, including yesterday's to the Wall Street Journal. Both times, Apple claimed that the delays in processing iMac orders were due to high demand, not because it had slowed or stopped the assembly lines so it could find the cause of the flickering problem.
Display issues have plagued Apple's 27-in. iMac desktop computers since the new machines debuted Oct. 20. Users have reported cracked screens, a yellow tint to the display, black banding and, of course, the irritating flickers.
Some owners of the less-expensive 21.5-in. iMacs have also complained of display problems, but the number of reports is much smaller than for the larger model.
Gregg Keizer covers Microsoft, security issues, Apple, Web browsers and general technology breaking news for Computerworld. Follow Gregg on Twitter at @gkeizer, send e-mail to firstname.lastname@example.org or subscribe to Gregg's RSS feed .
- Apple unveils minor bumps to MacBook Pro laptops
- Feds arrest Florida man who allegedly conned Apple out of $309K
- Yosemite's traffic share triples after public beta debuts
- Apple hasn't exhausted its supply of Yosemite betas
- 13 pieces of advice for Yosemite beta testers
- The other Apple economy: $2B in devices on eBay
- Apple sends users scrambling for OS X Yosemite
- Long replacement cycle drags down iPad sales
- Apple unwraps OS X Yosemite public beta Thursday
- Apple grows Mac sales by 18% on the back of the MacBook Air
Read more about Macintosh in Computerworld's Macintosh Topic Center.
- Agility & Scalability for Oracle EBS R12 and RAC on VMware vSphere 5 This white paper outlines extensive performance and scalability testing of Oracle EBS applications on a Vblock™ Systems with vSphere 5.
- Oracle and VCE: The Next Step in Integrated Computing Platforms In this ESG Lab review you will learn how a VCE system driven by Oracle, delivers the perfect blend of high performance and...
- Migrate Oracle Apps from RISC/UNIX to Virtualized x86 Ready to move Oracle to a virtualized environment? This brief explains how true converged infrastructure can help you migrate from a RISC/UNIX environment...
- Step Out of the Bull's-Eye Learn about the evolution of targeted attacks, the latest in security intelligence, and strategic steps to keep your business safe.
- Keep Servers Up and Running and Attackers in the Dark An SSL/TLS handshake requires at least 10 times more processing power on a server than on the client. SSL renegotiation attacks can readily...
- On Demand: Mastering the Art of Mobile Content Management Mobile device usage in the enterprise has skyrocketed, and it continues to escalate. IT must answer to users who demand access to their... All Macintosh White Papers | Webcasts
Our new weekly Consumerization of IT newsletter covers a wide range of trends including BYOD, smartphones, tablets, MDM, cloud, social and what it all means for IT. Subscribe now and stay up to date!