On Wed, 2016-12-28 at 11:59 +0800, Peter Xu wrote: > On Tue, Dec 27, 2016 at 09:46:55PM +0200, Kalle Valo wrote: > > Peter Xu <peterx@xxxxxxxxxx> writes: > > > > > Looks like latest Linux master (4.10-rc1, 7ce7d89f) cannot work well > > > with my wireless card, which is: > > > > > > Intel Corporation Wireless 7260 (rev bb) > > > > > > Boot message shows that no suitable firmware found: > > > > > > # journalctl -kp3 > > > Dec 27 16:38:00 kernel: Error parsing PCC subspaces from PCCT > > > Dec 27 16:38:00 kernel: mmc0: Unknown controller version (3). You may experience problems. > > > Dec 27 16:38:02 kernel: DMAR: DRHD: handling fault status reg 2 > > > Dec 27 16:38:02 kernel: DMAR: [DMA Write] Request device [00:02.0] fault addr 7200000000 [fault reason 05] PTE Write a > > > Dec 27 16:38:03 kernel: tpm tpm0: A TPM error (6) occurred attempting to read a pcr value > > > Dec 27 16:38:04 kernel: iwlwifi 0000:03:00.0: no suitable firmware found! > > > > > > Linux stable/master (Linux 4.8-rc8, 08895a8b6b) works for me. And no > > > further tests have been done yet. > > > > > > Is this a known issue? Please let me know if anyone wants more info or > > > logs, since this error triggers easily (everytime I boot). > > > > The error message isn't really telling much to the user (hint hint) but > > I suspect this is by design: > > > > "iwlwifi: remove support for fw older than -17 and -22 Right, we only maintain support for a certain number of firmware versions. The FW APIs change with time and we don't want to keep all legacy code supporting old firmwares in the driver forever. I agree that "no suitable firmware found!" is a bit scarce. I'll see if we can improve that with something: "no suitable firmware found! You need iwlwifi-7260-17.ucode (<link to git>)". > > FW versions older than -17 for 3160 and 7260 and older than -22 for > > newer NICs are not supported anymore. Don't load these versions > > and remove code that handles them." > > > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4b87e5af638b6056bd6c20b0954d09a5a58633be > > > > Adding luca. > > Thanks for the triage. > > Larry's link for -17 firmware solved my issue. Though I still don't > know whether it is too aggresive if we just remove the support for -16 > (which is the one I was using with the old 4.6 kernel, btw I am using > Fedora 24, which is relatively new as well). I don't think we are very aggressive, we have been supporting -17 since v4.3: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5865f3658ba37c54e346b0fdee08a1c7a152681b And we have published the firmware about half a year ago: http://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git/commit/iwlwifi-7260-17.ucode?id=f2cf4d67e8eced29c8a473d3a27057aa2df57c42 I understand your concern, but if you want to be on the bleeding-edge kernel, you should be on the bleeding-edge linux-firmware as well. ;) But as I said, I'll try to improve the error message, as that should make it easier to figure out. -- Cheers, Luca.
