Hi Leah, I manage to do bisect myself. I have noticed that the coreboot revision used by t400 has changed around Jul 17:
$ git diff 23048a4 HEAD
resources/libreboot/config/grub/t400_8mb/cbrevision
diff --git a/resources/libreboot/config/grub/t400_8mb/cbrevision
b/resources/libreboot/config/grub/t400_8mb/cbrevision
index 1ab8299..d4e47be 100644
--- a/resources/libreboot/config/grub/t400_8mb/cbrevision
+++ b/resources/libreboot/config/grub/t400_8mb/cbrevision
@@ -1 +1 @@
-2a3434757ef425dbdfedf1fc69e1a033a6e7310d
+d83b0e9ac4174cca92ac2c3b83a7e8491a9a1ff4
Is it possible to do bisect like below?
start bisect on coreboot's repository between the two revision, then
write the current coreboot revision number given by $git show -s to
resources/libreboot/config/grub/t400_?mb/cbrevision, then build
libreboot as usual and flash and test, then mark the current
revision on coreboot's repository and recurse.
Persmule
在 2016年08月11日 18:27, Leah Rowe 写道:
Hi Persmule,
Op 11/08/16 om 03:46 schreef Persmule:
> Hi all,
> Sorry, the different byte is actually 0x14 (024 in octal) in the
> older and 0x24 (044 in octal) in the newer. I used "$cmp -bl" to
> search the possible difference, which print the different byte in
> octal.
I made some changes to ich9gen, relating to the descriptor, some
time
ago. We found for instance that the "component density" section was
wrong, so we fixed that. There were some other minor changes. Users
have reported working wifi with those newer descriptors in earlier
snapshots. The 96 snapshot uses a new revision of coreboot and as
far
as I know, this is all that has changed, aside from some minor
patches
changed which also shouldn't (in my opinion) affect wifi. We think
upstream (coreboot project) might have broken it, so someone will
have
to bisect coreboot to see if there is a regression, and if so on
what
commit.
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