-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 08/14/2012 05:15 PM, Seth Forshee wrote: > On Tue, Aug 14, 2012 at 04:53:47PM +0200, Bernhard Froemel wrote: >> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >> >> Only in relation to Seth's future apple-gmux patch series about >> vgaswitcheroo and restoring the gmux device configuration across >> suspend/resume [1]: On resume the gmux registers 0x28 (DDC) and >> 0x10 (SWITCH_DISPLAY) (i.e., the first two writes) are not >> restored (result: the screen remains black after >> suspend/resume). >> >> Of course, this does not happen with my patch proposal ;) >> Unfortunately, I have not the time to sort this out in the next >> couple of days -- on the other hand this is probably not a >> problem w.r.t. this patch, but needs to be taken care of in >> Seth's patch series. > > The patch adding support for switcheroo *does* restore those > registers on resume. Are you saying that isn't happening when you > use it? Yes, the 8bit writes don't seem to get all through with Matthew's patch, but they do with mine. Just tested manual switching (/sys/kernel/debug/vgaswitcheroo/switch, from IGD to DIS) -> doesn't work either; even locks up my system: > [ 123.680062] hda-intel: spurious response 0x407381:0x0, last > cmd=0x770883 [ 123.680070] hda-intel: spurious response > 0x9000094:0x0, last cmd=0x770883 [ 123.680073] hda-intel: spurious > response 0x185600f0:0x0, last cmd=0x770883 [ 123.680076] > hda-intel: spurious response 0x4:0x0, last cmd=0x770883 [ > 123.680079] hda-intel: spurious response 0xb0a0908:0x0, last > cmd=0x770883 [ 123.680082] hda-intel: spurious response > 0x407381:0x0, last cmd=0x770883 [ 123.680084] hda-intel: spurious > response 0x9000094:0x0, last cmd=0x770883 [ 123.680087] hda-intel: > spurious response 0x185600f0:0x0, last cmd=0x770883 While comparing our patches, I discovered that mine isnt' a good reference here, because in my ready and complete function variants I didn't write/read the correct ioports (forgot about the offset; so they were only slightly delaying execution). After I fixed that (and a status-bit semantic mixup), the results appear similar :/ Need to play around further.. Bernhard -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAlAqhrcACgkQ6iVUjPs37JnhtwCePUp7sLQW+GhBFOkFbkjr6Yrh VAsAoJ3TjtJu2gQpayFc6iP5nBQfdAPG =ziXd -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe platform-driver-x86" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
