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Apple Computing Products:
macOS - Desktop Hardware
iMac Screen not waking from sleep since 10.11
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<blockquote data-quote="h888041" data-source="post: 1687914" data-attributes="member: 361787"><p>May have fixed this... I think one of the 4GB modules is faulty. After trying pmset hibernatemode = 25, it pointed me towards testing the memory.</p><p></p><p><em> hibernatemode = 25 (binary 0001 1001) is only settable via pmset. The system will store a copy of mem-ory memory</em></p><p><em> ory to persistent storage (the disk), and will remove power to memory. The system will restore from</em></p><p><em> disk image.</em></p><p></p><p>Tried just the 2x4GB modules, 3 beeps (did not pass data integrity check). Put the 2x2GB modules in, iMac booted fine and is now waking from boot without an issue!</p><p></p><p>Hooray!</p></blockquote><p></p>
[QUOTE="h888041, post: 1687914, member: 361787"] May have fixed this... I think one of the 4GB modules is faulty. After trying pmset hibernatemode = 25, it pointed me towards testing the memory. [I] hibernatemode = 25 (binary 0001 1001) is only settable via pmset. The system will store a copy of mem-ory memory ory to persistent storage (the disk), and will remove power to memory. The system will restore from disk image.[/I] Tried just the 2x4GB modules, 3 beeps (did not pass data integrity check). Put the 2x2GB modules in, iMac booted fine and is now waking from boot without an issue! Hooray! [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
iMac Screen not waking from sleep since 10.11
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