I managed to install F28 (fresh install of KDE spin) on the second disc
of my T450s. I cannot reproduce the issue by changing screen brightness
there with min_power and also the med_power_with_dipm default. I tried
it with battery only as well as with connected power supply. Now I'll
see whether I get that rare random freeze.
In attachment you find the information for my T450s and the installed disks.
Greetings,
Christian
On 04/29/2018 11:03 AM, Hans de Goede wrote:
> Hi,
>
> On 29-04-18 10:42, Christian Dersch wrote:
>> Hi,
>>
>> should I also get the freeze from the F28 live media?
>
> Yes, you should, but I just got the second of the 3 users reporting
> this to confirm that on his T450s the hang happens rarely, say
> about once a day, so unless you want to run the live-media for
> a long time, testing with F28 live is not really going to be helpful.
>
> The 3th reporter reports he can trigger the issue at will (on a
> different model) by changing the LCD panel brightness, so if you
> can give that a try that would be great. Please try changing the
> brightness both through the hotkeys and through the system-menu
> (top right menu of the gnome shell top-bar).
>
> Regards,
>
> Hans
>
>
>> I have a T450s
>> (which worked fine with your LPM test kernels few months ago) but cannot
>> migrate to 28 yet. >
>> Greetings,
>> Christian
>>
>>
>> On 04/29/2018 10:34 AM, Hans de Goede wrote:
>>> Hi,
>>>
>>> On 29-04-18 09:25, Hans de Goede wrote:
>>>> Hi All,
>>>>
>>>> I'm sending this to the fedora-kernel and -devel lists
>>>> both to get the kernel team aware of this and because it
>>>> is not entirely clear to me how to best deal with this.
>>>>
>>>> I guess we should get this added to the release-notes /
>>>> common-bugs page for F28, but I'm not sure what the
>>>> procedure is for that ?
>>>>
>>>> I've just become aware that at least for some users
>>>> the use of SATA LPM in F28 causes the Lenovo 50
>>>> series laptops (confirmed X250, T450s G50-80) freeze/
>>>> hang hard under certain conditions when using SATA
>>>> LPM, independent of the disk used (*).
>>>>
>>>> This is currently being tracked in:
>>>> https://bugzilla.redhat.com/show_bug.cgi?id=1571330
>>>>
>>>> A known workaround is to add: "ahci.mobile_lpm_policy=0"
>>>> to the kernel boot command line.
>>>>
>>>> Can someone help me to get this documented? Once we've
>>>> figured out what is going on I hope to be able to fix this
>>>> with a kernel update, but people may still need the
>>>> workaround to install Fedora 28.
>>>>
>>>> Also if people are using Fedora 28 on a 50 series Lenovo
>>>> laptop without issues, please let me know.
>>>
>>> Some more info on this, the user with a x250 is reporting
>>> the problem is hard-freeze about once a day, which goes
>>> away when disabling LPM, so if you have a 50 series Lenovo
>>> laptop and are seeing the occasional hard-freeze this may
>>> be the cause.
>>>
>>> Regards,
>>>
>>> Hans
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>>
[root@T450s1 ~]# smartctl -i /dev/sda
smartctl 6.6 2017-11-05 r4594 [x86_64-linux-4.16.4-300.fc28.x86_64] (local build)
Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Device Model: LITEON LCH-256V2S
Serial Number:
LU WWN Device Id: 5 002303 10073e968
Firmware Version: 3C87902
User Capacity: 256,060,514,304 bytes [256 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-2 (minor revision not indicated)
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Sun Apr 29 10:52:36 2018 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
[root@T450s1 ~]# smartctl -i /dev/sdb
smartctl 6.6 2017-11-05 r4594 [x86_64-linux-4.16.4-300.fc28.x86_64] (local build)
Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF INFORMATION SECTION ===
Model Family: SiliconMotion based SSDs
Device Model: TS512GMTS400
Serial Number:
Firmware Version: O0919A
User Capacity: 512,110,190,592 bytes [512 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Device is: In smartctl database [for details use: -P show]
ATA Version is: ACS-2 (minor revision not indicated)
SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Sun Apr 29 10:52:43 2018 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
dmidecode information
BIOS Information
Vendor: LENOVO
Version: JBET54WW (1.19 )
Release Date: 11/06/2015
Address: 0xE0000
Runtime Size: 128 kB
ROM Size: 16 MB
Characteristics:
PCI is supported
PNP is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
ACPI is supported
USB legacy is supported
BIOS boot specification is supported
Targeted content distribution is supported
UEFI is supported
BIOS Revision: 1.19
Firmware Revision: 1.2
System Information
Manufacturer: LENOVO
Product Name: 20BWS3FX00
Version: ThinkPad T450s
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