I've logged this also at
https://bugzilla.kernel.org/show_bug.cgi?id=40802.
** Bug watch added: Linux Kernel Bug Tracker #40802
http://bugzilla.kernel.org/show_bug.cgi?id=40802
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A disadvantage of the regular PCI rescan method is that the scan adds
this warning to the syslog every time it runs:
i915 :00:02.0: BAR 6: [??? 0x flags 0x2] has bogus alignment
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indeed - sorry. too hasty in my reading.
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https://bugs.launchpad.net/bugs/703180
Title:
SD card reader doesn't work on new Dell XPS
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"So you could switch that around to rescan every few seconds and then
quit after the reader appears in the lspci output."
But that is exactly what it does.
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The problem with that script is that the reader doesn't appear in the
output of lspci until *after* a rescan with a card inserted. So you
could switch that around to rescan every few seconds and then quit after
the reader appears in the lspci output, but as is, I don't think that
will work.
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Yo
Another option is to use the attached script, which automates the
process of detecting the reader, so you don't have to press a hotkey.
* copy the attached file scan_sd_reader.sh to /etc/init.d/ and make it
executable:
sudo cp scan_sd_reader.sh /etc/init.d && sudo chmod +x
/etc/init.d/scan_sd_rea
I set up a hot-key to call a tiny suid program that triggers the rescan. Works
great.
Put the following in rescan.c:
#include
main(){
FILE *outfile;
outfile=fopen("/sys/bus/pci/rescan","w");
if (outfile != NULL){
fprintf(outfile,"1\n");
fclose(outfile);
}
else printf("permissi
Actually, what might be a good workaround would be to set a keybinding
to the rescan - so you would insert an sd card, then hit some hot-key to
trigger the rescan and mount the card?
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@Etienne: rescanning also doesn't actually solve the problem: remove the
SD card and rescan and the device disappears again! It's only when
rescanning (or booting) with a card inserted and then not rescanning
that it stays.
I guess the only solution would be to rescan the bus any time the system
p
In my experience, doing this at boot time doesn't help. It only finds
the controller after an sd card has been inserted.
If there is an sd card present at boot time then the rescan is
unnecessary as the controller is found anyway.
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The rescan command worked for me.
echo 1 > /sys/bus/pci/rescan
Is there a way to do this at boot time?
Dell XPS 15 502x, Ubuntu 11.04, kernel 2.6.38-8-generic, 64-bit.
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This is still a problem with the 3.0-rc1 kernel.
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https://bugs.launchpad.net/bugs/703180
Title:
SD card reader doesn't work on new Dell XPS
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** Changed in: linux (Ubuntu)
Status: New => Confirmed
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Title:
SD card reader doesn't work on new Dell XPS
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Changed back to new as I've tested the latest upstream kernel as
requested.
This is an issue on the XPS 15 L502x model as well as the L501x.
** Changed in: linux (Ubuntu)
Status: Incomplete => New
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Did anyone ever figure this out? It's still broken with the 2.6.39-rc7
kernel. But after I trigger the rescan, it detects both card insertion
and removal. (I've booted the kernel with the argument
pciehp.pciehp_force=1 because someone said it fixed the issue on an
L501x, but it didn't make any diff
I have have the same issue on 11.04 Beta 1 @Fallen rescan works to
mount card.
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Title:
SD card reader doesn't work on new Dell XPS
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@Fallen:
rescanning works for me. Very odd, rescanning again without a card inserted
doesn't let the four devices disappear. Maybe it's a hardware bug, like they
don't get switched on by BIOS on boot without a medium?
Testing 2.6.35-25-generic-pae tomorrow.
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Hi pascal,
If you could also please test the latest upstream kernel available that would
be great. It will allow additional upstream developers to examine the issue.
Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the
upstream kernel, please remove the 'needs-upstr
Newer Kernels allow the following, you must be root.
echo 1 > /sys/bus/pci/rescan
I'm still getting Error -110 (as I've read a timeout error) though:
[11198.241468] mmc0: error -110 whilst initialising SD card
...
[11468.786524] mmcblk0: error -110 sending status comand
[11468.786532] mmcblk0: e
Ah now that's weird: it works when I boot with an SD card inserted
(rebooted into windows to check: the reader appears as 4 PCIe devices
for each standard it supports)
lspci now lists:
07:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev
30)
07:00.2 SD Host controller:
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Title:
SD card reader doesn't work on new Dell XPS
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