Cool! Thanks for the analysis.
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Title:
[Dell Latitude E5440] O2 Card reader [1217:8520] is not stable on this
system
Status in
dmesg output while the card reader is working normally. (3.17-rc1)
** Attachment added: dmesg.ok
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1346067/+attachment/4180281/+files/dmesg.ok
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Hello Adam,
Still exist with mainline kernel 3.16 and 3.17-rc1
** Attachment added: dmesg.fail
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1346067/+attachment/4180280/+files/dmesg.fail
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Hi, Po-Hsu
Please test http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.13-trusty/
when you have time, then I can get a tentative conclusion.
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Hello Adam,
The card reader does not work with this kernel (3.13.0-031300) at all
** Attachment added: dmesg-3.13
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1346067/+attachment/4180468/+files/dmesg-3.13
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Sorry, Po-Hsu, could you please attach the dmesg log after
rebooting(3.13.0-031300) too? I hadn't made myself clear, the point to
test v3.13-trusty is to check if the device always shows up with that
kernel.
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The log attached in #12 is not the one you want?
[0.00] Linux version 3.13.0-031300-generic (apw@gomeisa) (gcc version
4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201401192235 SMP Mon Jan 20 03:36:48
UTC 2014
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I need your help of trying to reproduce the device missing issue, cold
boot and reboot with that 3.13.0-031300 kernel, it doesn't matter
whether the reader works(sure it won't), the point is to check if the
device will also disappear under this kernel after rebooting
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Cold boot and reboot with 3.13.0-031300 kernel, the O2 Micro Inc. SD/MMC Card
Reader could always be found in lspci output.
Do you need to dmesg output for cold boot and reboot?
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Hi, Po-Hsu
Here is my analysis, the hardware disapears from kernel log and lspci
output, it has two possiable causes:
1, BIOS issue
2, kernel driver issue
I asked you to test 3.13.0-031300 kernel, which has no O2Micro
initialization codes, the result turns out the hardware won't disappear.
So
@Po-Hsu
Have you tried the latest mainline kernel? http://kernel.ubuntu.com
/~kernel-ppa/mainline/v3.16-utopic/
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Title:
[Dell
** Also affects: hwe-next
Importance: Undecided
Status: New
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Title:
[Dell Latitude E5440] O2 Card reader [1217:8520] is
Hello, it's:
01:00.0 SD Host controller [0805]: O2 Micro, Inc. SD/MMC Card Reader Controller
[1217:8520] (rev 01) (prog-if 01)
Subsystem: Dell Device [1028:05de]
** Attachment added: lspci.log
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1346067/+attachment/4161663/+files/lspci.log
Hi, Po-Hsu Lin
Please test this kernel: http://kernel.ubuntu.com/~adamlee/lp1346067/
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Title:
[Dell Latitude E5440] O2 Card reader
Hello Adam,
It's not working on top of 14.04 (3.13.0-32)
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Title:
[Dell Latitude E5440] O2 Card reader [1217:8520] is not stable on
uname -a result indicates that the kernel was not running (timestamp is
Jul. 15, not today)
Verified again by removing the installed 3.13.0-32 kernel and install the
kernel form #5 again, cool boot
It now running on 3.13.0-32 Jul. 24 15:01:00
But still not working, card reader appear / disappear
** Changed in: linux (Ubuntu)
Assignee: Anthony Wong (anthonywong) = Adam Lee (adam8157)
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Title:
[Dell Latitude E5440] O2 Card
what is the sub ID? that lspci.txt is after reboot, don't see this card
reader in it.
** Changed in: linux (Ubuntu)
Status: Confirmed = In Progress
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** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
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Title:
[Dell Latitude E5440] O2 Card reader [1217:8520] is not
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