I experience this issue on Ubuntu 20.04
$neofetch
OS: Ubuntu 20.04 LTS x86_64
Kernel: 5.4.0-37-generic
Uptime: 2 mins
Packages: 2210 (dpkg), 36 (flatpak), 32 (snap)
Shell: bash 5.0.16
Resolution: 1920x1200, 1680x1050
DE: GNOME
WM: Mutter
WM Theme: Adwaita
Theme: Adwaita-dark [GTK2/3]
** Tags added: ubuntu-certified
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https://bugs.launchpad.net/bugs/1783906
Title:
Linux 4.15 and onwards fails to initialize some hard drives
Status in linux package in
No I think you did everything right.
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Title:
Linux 4.15 and onwards fails to initialize some hard drives
Status in linux package
I'm not familiar with kernel mailing list so I don't know why my patch
was ignored. Maybe format of email was not proper, or I send wrong
recipients.
I also updated the patch, so I attach the latest version.
** Patch added:
"0001-Fix-for-initialize-drives-not-capable-to-handle-maxi.patch"
Yes, I have sent the patch, but until today no one answered
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Title:
Linux 4.15 and onwards fails to initialize some hard drives
Have you sent the patch upstream?
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Title:
Linux 4.15 and onwards fails to initialize some hard drives
Status in linux package in
I tuned a little a previous patch
** Patch added:
"0001-Fix-for-initialize-drives-not-capable-to-handle-maxi.patch"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1783906/+attachment/5264605/+files/0001-Fix-for-initialize-drives-not-capable-to-handle-maxi.patch
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Yes, it may also be good to test on different configurations, the original
patch fixed hotplug related
problem where 6Gps drives connected back at lower speeds.
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There is patch to issue I described above
** Patch added:
"0001-libata-Fix-for-initialize-drives-not-capable-to-hand.patch"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1783906/+attachment/5264201/+files/0001-libata-Fix-for-initialize-drives-not-capable-to-hand.patch
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You
Maybe this conversation should be moved to Linux linux-ide mailing list.
There is some technical decisions to make and may it's better to consult
it with other developers.
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Ok, I find out what happens.
While standard SATA setup, chain of functions is called: ... ->
ata_eh_recover -> ata_eh_reset. If SATA is not initialized, then hard
reset is performed (function ata_do_reset() ).
In both drivers I have, function ata_do_reset() returns 0, even if after
this reset
No, my device doesn't work with 6Gbps. In kernel 4.14 if my drive was
offline, function sata_down_spd_limit() cut down link->sata_spd_limit to
1, so it corresponds to 1.5Gbps, and was working. But it wasn't even try
to set limit to 3Gbps.
In my device, unfortunately mask and link->sata_spd_limit
I not sure upstream will let us change the value of mask.
Will you get the same result of you set sata_spd_limit?
link->sata_spd_limit = 0x7
I believe that corresponds to 6Gbps but I don't see a #define
we can use.
Also, is the comment accurate? Before you started debugging
did you see a hard
I think that I fixed second part of my issue.
I modified patch 0001-libata-sata_down_spd_limit-should-record-link-
speed-.patch
** Patch added:
"0001-libata-sata_down_spd_limit-should-record-link-speed-.patch"
I can split my issue into two cases:
1. My HDD inside DVD enclosure is not discovered. Then I have to reset
stata device 3 or 4 times by "echo "- - -" >
/sys/class/scsi_host/host1/scan" command
2. After stata resets, function sata_down_spd_limit() is called.
* In Linux 4.14 this function set
I forgot to say that even on Linux 4.14 I have to execute manually
script while booting:
echo "- - -" > /sys/class/scsi_host/host1/scan
So, only after this reset sata my laptop can see external HDD. Since
Linux 4.15 resetting has no effect.
I am analyzing how libata setup is working, so I will
Ok thanks, please look at this some more, I will try to get back with
you soon.
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Title:
Linux 4.15 and onwards fails to initialize
Unfortunately patch "0001-libata-sata_down_spd_limit-should-record-link-
speed-.patch" don't work.
Here is my dmesg dump with proposed debug info
https://paste.ubuntu.com/p/vxTM3jdMv9/
I'm not familiar with libata and sata_down_spd_limit function, but
"return -EINVAL;" spoils functionality for
Hi!
I have similar issue as described in topic. I have two drives, one
primary SSD and second HDD inside DVD enclosure.
Both drives works fine until kernel version 4.15.0-rc4 (exact commit
** Changed in: linux (Ubuntu Cosmic)
Status: In Progress => Confirmed
** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Confirmed
** Changed in: linux (Ubuntu)
Status: In Progress => Confirmed
** Changed in: linux (Ubuntu Cosmic)
Assignee: Joseph Salisbury
I built a test kernel with the patch from David posted in comment #21. The
test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1783906
Can you test this kernel and see if it resolves this bug?
Note about installing test kernels:
• If the test kernel is prior to
** Tags added: patch
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Title:
Linux 4.15 and onwards fails to initialize some hard drives
Status in linux package in Ubuntu:
In
Hi,
May I ask for one more test? Looking at the code some more, I don't think I can
just remove
the return. The root of the problem is hard reset fails and
sata_link_hardreset() is never able
to reconfigure the speed. This patch sets link->sata_spd_limit before
returning, I have been
testing
Hi,
I think the fix is removing the "return" and letting the code fall through in
sata_down_spd_limit().
Please give me some time to review the latest log, and I will need to
reconfigure a couple of local
systems and re-test with that change. Thanks.
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Here's dmesg with #33~lp1783906DEBUGv2: https://paste.ubuntu.com/p/jK6zjKjtqc/
I expected this to have the bug and only print additional debug info, but it
seems this fix the bug. The second drive (WDC) came up and I could mount it's
partitions and read info from them.
Just to make sure, I did
I built a second test kernel with additional debug output as requested
by David. This kernel also has the two lines removed request by David.
Can you test this kernel and post your syslog or dmesg output?
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1783906
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Thanks for the response, David! Correct the print for the mask came
after those 2 lines of code. Here is the snippet:
/* unconditionally mask off the highest bit */
bit = fls(mask) - 1;
mask &= ~(1 << bit);
/* Debug added for lp1783906: */
dump_stack();
I'll build another test kernel with you're suggestions and ask @danieru
to test.
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Title:
Linux 4.15 and onwards fails to initialize
Hi Joe,
The original intent of the patch was not forcing a 6Gbs drive down to
1.5Gbs after hotplug.
Noting,
SSTATUS = 275 = 0x113 = 0001 0001 0011
That corresponds to ACTIVE PM STATE | GEN1 SPEED | DEVICE DETECTED
spd = 1 (corresponds to 1.5Gbps)
One question, the print for mask came after
Ok, thanks, please let me look through the output.
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Title:
Linux 4.15 and onwards fails to initialize some hard drives
Status in
Here's dmesg with 4.15.0-30-generic #33~lp1783906DEBUG running for 10 mins:
https://paste.ubuntu.com/p/Qc9Kpb62ch/
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Title:
Linux
I built a test kernel with debug output as requested by upstream. Can
you test this kernel and post your syslog or dmesg output?
The test kernel can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1783906
This kernel should exhibit the bug, but will write to syslog with output like:
Hi Joe,
Can we put some debug in sata_down_spd_limit() and see some of the values
for spdlimit, sstatus, spd, mask, right before the change to not force the mask.
Also, can we track the exact path of calling sata_down_spd_limit().
The the intent of the patch was not to force the speed down
Your test kernel with commit 2dc0b46b5ea3 does indeed fix the issue with
the WD HDD. Here's the dmesg with your test kernel:
https://paste.ubuntu.com/p/745NscYFJh/
As you can see at the top i was using: "[0.00] Linux version
4.15.0-29-generic (root@kathleen) (gcc version 7.3.0 (Ubuntu
Commit 2dc0b46b5ea3 in v4.15-rc4 looks like it could be related. I
built a Bionic test kernel with this commit reverted. The test kernel
can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1783906
Can you test this kernel and see if it resolves this bug?
Thanks in advance!
Note
Thanks for the testing. I'll review the commits between -rc3 and -rc4.
If nothing sticks out, I'll start a kernel bisect a build a test kernel.
** Also affects: linux (Ubuntu Cosmic)
Importance: Medium
Status: Confirmed
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
I went ahead and test this bug from linux 4.15rc1 and up to linux 4.15rc5.
What i found is that linux 4.15rc3 is the last RC version where this bug
doesn't occur, and linux 4.15rc4 is the first RC version where this bug occur.
Here's the dmesg with linux 4.15rc3 and the WD HDD working:
I first experienced this issue while testing the second beta of ubuntu
18.04, as i explained in the original bug report this issue doesn't
happen if i use linux 4.14
I've installed linux 4.18rc6 as explained in the wiki, but the WD HDD still
won't come up.
Here's the dmesg with this kernel:
Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.18
I forgot to mention the Western Digital hard drive has always been slow
to actually show up, and I’ve always gotten those "COMRESET failed, link
is slow to respond" messages since I bought it.
And two details I forgot to mention about the hard drives:
1 The Toshiba hard drive that works is
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