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Dmesg errors on a freshly installed system
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skgucek
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Joined: 10 Feb 2015
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PostPosted: Wed Apr 20, 2016 5:26 pm    Post subject: Dmesg errors on a freshly installed system Reply with quote

Hello all,

I decided to install Gentoo on an old netbook, after the previous Arch system got too bloated ... anyway, all is well; I finished the install part of the Handbook, unmasked ~, upgraded everything, switched to -pf kernel and I am currently running "emerge -e @world" to get a fast, stable base before proceeding to install X, openbox et al.

Despite running -pf kernel, I think my kernel configuration is pretty sane (I can post the .config if necessary), except some strange dmesg errors are displayed if I insert an USB stick or boot with one inserted:

[...] sd 4:0:0:0: [sdb] No Caching mode page found
[...] sd 4:0:0:0: [sdb] Assuming drive cache: write through

Is this normal? It gets logged under the error (err) level. I am afraid to mount the USB drive until you guys assure me this is normal or tell me if I mucked something up while configuring the kernel.

Thanks a lot!
-S

EDIT:
I decided to wgetpaste some files you might be interested:

http://tinyurl.com/zefs855 dmesg-errors.txt
http://tinyurl.com/hp9rfxw current-makeconf.txt
http://tinyurl.com/hpqz3fl current-kconfig.txt

N.B. systemd and BTRFS errors can be safely disregarded as they are apparently unresolved bugs in kernel/btrfs.
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NeddySeagoon
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PostPosted: Wed Apr 20, 2016 5:58 pm    Post subject: Reply with quote

skgucek,

Code:
[...] sd 4:0:0:0: [sdb] No Caching mode page found
[...] sd 4:0:0:0: [sdb] Assuming drive cache: write through
is normal.
The messages are informational, not errors.
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Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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skgucek
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Joined: 10 Feb 2015
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PostPosted: Thu Apr 21, 2016 3:08 pm    Post subject: Reply with quote

NeddySeagoon wrote:
skgucek,

Code:
[...] sd 4:0:0:0: [sdb] No Caching mode page found
[...] sd 4:0:0:0: [sdb] Assuming drive cache: write through
is normal.
The messages are informational, not errors.


Well, thank you for your reply. Still, it's interesting that they get logged under level "err" and can be displayed with "dmesg -l err" ...
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