Bug 655450
| Summary: | iwlagn spews "BA scd_flow 0 does not match txq_id 10" and WiFi connection is unstable | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | VK <vendor-redhat> |
| Component: | kernel | Assignee: | Stanislaw Gruszka <sgruszka> |
| Status: | CLOSED DUPLICATE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | high | Docs Contact: | |
| Priority: | low | ||
| Version: | 14 | CC: | bulk, dougsland, gansalmon, itamar, jonathan, jruemker, kernel-maint, linville, madhu.chinakonda, pmrpla, pp, sgruszka, steinpilz |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-01-12 12:38:30 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
|
Description
VK
2010-11-21 00:51:02 UTC
Re-assigned to the kernel. There is workaround for that issue: echo "options iwlagn 11n_disable50=1 11n_disable=1" >> /etc/modprobe.d/iwlwifi.conf Also problem is gone in 2.6.36 kernel, but exact commit which fix that is not know so far. RE: Workaround: does this disable 802.11n speeds and drop to older speeds? If so, it's equivalent to "don't use WiFi" as a workaround, since that's the whole point of my using this chipset/laptop 8-( (Yeah, I know it means more stability at least). I was hoping the "known uCode" issue mentioned in Intel Wireless BZ 2228 would be the start of the path to a fix. As for the 2.6.36 magic fix, that's interesting ... I don't suppose there is a newer iwlagn driver + micro-code? (In reply to comment #3) > RE: Workaround: does this disable 802.11n speeds and drop to older speeds? Yes. > If > so, it's equivalent to "don't use WiFi" as a workaround, since that's the whole > point of my using this chipset/laptop 8-( It does not make huge difference when watching web pages. > As for the 2.6.36 magic fix, that's interesting ... I don't suppose there is a > newer iwlagn driver + micro-code? Micro-code (firmware) does not change. Each kernel release include updated driver with a new patches (usually a lot of patches, they fix some things and broke some others). 2.6.37 from rawhide is "better" but still fails eventually (1-2 days vs. 10 mins), with slightly different errors. I saw a patch that just disabled tx aggregation vs. 11n completely (could have been bugzilla.kernel.org) that apparently works around the issue nicely, and you still get 11n-speed downloads that way, that's not in .37 I think. Can't find it now, though. Dupe of #648732 , mind you. Marking as dupe and adding relevant comments from here to that one. *** This bug has been marked as a duplicate of bug 648732 *** |