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by userbinator
4105 days ago
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On a laptop with an Intel HD4000 and a dedicated nVidia card where the OS can switch between cards, one has to force the usage of the dedicated card to read from VRAM. The internal graphics card seems to be unaffected at the moment. Makes sense; integrated GPUs (UMA) share the same RAM as the rest of the system, which will get cleared as the BIOS does its RAM test at POST (this might not always be the case if 'fastboot' or similar features are enabled.) Another observation from this would be that GPUs do not do any memory tests on their VRAM, which also agrees with the fact that most of the time failed VRAM just causes artifacts to show up and no message/etc. upon boot. Models designed for GPGPU use may behave differently. |
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I haven't seen a computer or laptop with fastboot disabled in over a decade...