Difference between revisions of "Board:lenovo/x60"
(→Problems in native graphics code exposed by recent kernels: Add upstream bug report)
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=== Other things ===
=== Other things ===
Battery indictor in various DE's can be unreliable. (showing 50% available for instance, when fully charged). Using
Battery indictor in various DE's can be unreliable. (showing 50% available for instance, when fully charged).
Using tools can show a spike in power when disconnecting AC.
* Add support for more batteries in ACPI.
* Add support for more batteries in ACPI.
Revision as of 01:41, 23 May 2014
works fine with Linux, some ACPI issues with Windows needs to be fixed.
- 1 Lenovo ThinkPad X60
- 1.1 Installation and Flashing
- 1.2 Status
- 1.3 Digitizer (X60 Tablet) and IR ports
- 1.4 proprietary components status
- 1.5 TODO
- 1.6 Enable backlight controls on X60 (with native gpu init instead of VGA ROM)
- 1.7 Features
Lenovo ThinkPad X60
Except where noted all status items apply to:
- x60 tablet
Aside from pre-sales configuration (display, processor speed, optional components) the three models appear identical. It is believed that they share a single schematic.
Installation and Flashing
Tutorial on Installation and flashing the x60 or t60:
Which used to be the main x60 page:
|CPU works||OK||Core Duo Mobile (L2300), PBGA479|
|L1 cache enabled||OK|
|L2 cache enabled||OK|
|L3 cache enabled||N/A|
|Multiple CPU support||N/A|
|Dual channel support||OK|
|On-board IDE 3.5"||N/A|
|On-board IDE 2.5"||N/A|
|On-board Ethernet||OK||Intel 82573L|
|On-board Smartcard reader||N/A|
|On-board PCMCIA||OK||Ricoh rl5c476|
|On-board SD card reader||N/A|
|ISA add-on cards||N/A|
|Audio/Modem-Riser (AMR/CNR) cards||N/A|
|PCI add-on cards||N/A|
|Mini-PCI add-on cards||OK|
|Mini-PCI-Express add-on cards||Unknown|
|PCI-X add-on cards||N/A|
|AGP graphics cards||N/A|
|PCI Express x1 add-on cards||N/A|
|PCI Express x2 add-on cards||N/A|
|PCI Express x4 add-on cards||N/A|
|PCI Express x8 add-on cards||N/A|
|PCI Express x16 add-on cards||N/A|
|PCI Express x32 add-on cards||N/A|
|HTX add-on cards||N/A|
|Legacy / Super I/O|
|Serial port 1 (COM1)||OK||located in Ultrabase X6|
|Serial port 2 (COM2)||N/A|
|Sensors / fan control||OK|
|CPU frequency scaling||OK|
|Other powersaving features||OK|
|Nonstandard LEDs||OK||LEDs are controlled by Embedded Controller (EC). Working without special support.|
|High precision event timers (HPET)||OK|
|Random number generator (RNG)||N/A|
|Wake on modem ring||Unknown|
|Wake on LAN||Unknown|
|Wake on keyboard||Unknown|
|Wake on mouse||Unknown|
|Tablet Touchscreen||WIP||x60 tablet wacom "penabled"|
Digitizer (X60 Tablet) and IR ports
the touchscreen/pen do not work as coreboot does not expose the internal COM port to which it is attached:
- Serial: irq 5 port 0x0200
Support for digitizer (and IrDA) has been written and submitted for review
proprietary components status
- CPU Microcode (optional?) - works fine without. See http://download.intel.com/design/mobile/SPECUPDT/30922214.pdf
- VGA option rom (optional): without it you will get no graphics during early boot, old kernel versions(like the one in trisquel 6) are able to initializes the intel graphic card. Note that the replacement doesn't work yet with seabios but works with grub(as a payload) or libpayload based payloads.
- EC(Embedded Controller) => you do not have to touch it(just leave it where it is)
Non-free components replacements
Replace the non-free VGA option rom by making native graphics init work.submited for review.
- Create a Native graphics<->VGA option rom. SeaVGABIOS (part of SeaBIOS) might be the answer. We need to look into that.
Make backlight work without the non-free option rom.See 
VGA Option ROM / VBIOS replacement (native graphics)
The VGA option ROM is proprietary. If you have an X60,X60s or X60t, GNUtoo (et al) has developed a free replacement which is under review, but you can use it right now:
- HOWTO: Build coreboot.rom with GRUB2, native graphics (free replacement for the proprietary VBIOS / VGA Option ROM) and without the nonfree microcode
Note: obsolete. See notes about backlight (Fn key) controls instead, includes native gfx init.
Problems in native graphics code exposed by recent kernels
It was discovered that while this code seems to work fine on kernels older than linux 3.12.
On 3.12 and later kernels the i915 driver became unstable. Causing broken/glitchy 3D. and performance bugs.
The current suspicion is that linux had a bug which caused it to miss stolen memory altogether on this machine and hence disable parts of code. This bug was corrected in: 17fec8a08698bcab98788e1e89f5b8e7502ababd
Which was identified by git bisect, to be the cause of the driver crashes using native vga on the x60.
The native vga init code in coreboot needs to be corrected to have more engineered memory management. In the interim users have attempted running patched linux 3.12 kernels which revert commit 17fec. To apparent success.
Reported upstream in the Freedesktop Bugzilla as [How to file a good bug report?.
Enable backlight controls on X60 (with native gpu init instead of VGA ROM)
Battery indictor in various DE's can be unreliable. (showing 50% available for instance, when fully charged). Using CLI tools to show battery info can show a sudden(brief) spike in reported power usage when disconnecting AC.
High pitch sound is present when CPU is idle (workaround: "processor.max_cstate=2" or "idle=halt" on kernel command line): http://libreboot.org/howto.html#cpu_cstates_buzzing
- Add support for more batteries in ACPI.
- Make the wifi card and/or the laptop produce less heat.
- Finish and merge support for thinkpad_acpi linux kernel module
- Sometimes some dock USB port aren't initialized => fix that
- Fix that warning:
[ 14.566817] ACPI Warning: 0x00000400-0x0000041f SystemIO conflicts with Region \_SB_.PCI0.SBUS.SMBI 1 (20130117/utaddress-251)
By using that advise:
<phcoder> GNUtoo-x60: in this case it looks like same range is declared twice in DSDT/SSDT
Without the VGA optiorn rom nvramtool says:
# ./nvramtool -a nvramtool: coreboot table not found. coreboot does not appear to be installed on this system. Scanning for the table produced the following results: 0 valid signatures were found with bad header checksums. 0 valid headers were found with bad table checksums.
Fortunately there is a workarround:
# ./nvramtool -y ../../src/mainboard/lenovo/x60/cmos.layout -a boot_option = Fallback last_boot = Fallback baud_rate = 115200 debug_level = Emergency hyper_threading = Enable nmi = Disable # Bad value -> boot_devices boot_default = 0x40 cmos_defaults_loaded = Yes lpt = Disable volume = 0xc tft_brightness = 0xf first_battery = Primary bluetooth = Disable
To get cbmem console working you need the non-free i915 option rom or native graphics(doesn't work yet, don't use) :fixed in master
When configuring coreboot with "make menuconfig" Go in console:
[*] Send console output to a CBMEM buffer (0x20000) Room allocated for console output in CBMEM (0xc00) Room allocated for console output in Cache as RAM
The following commit might be interesting to cherry-pick:
git fetch http://review.coreboot.org/coreboot refs/changes/03/3403/3 && git cherry-pick FETCH_HEAD
Dmidecode from the BIOS says:
BIOS Information Vendor: LENOVO Version: 7BETC7WW (2.08 )
So in make menuconfig go in
General setup --->
And modify Local version string accordinly
(7BETC7WW (2.08 )) Local version string
Then locate the following in dmidecode:
System Information Manufacturer: LENOVO Product Name: 1707Y8W Version: ThinkPad X60 Serial Number: L3BY949
(L3BY949) Serial number (ThinkPad X60) Version number (LENOVO) BIOS table vendor string (ThinkPad X60 / X60s) BIOS table part number string
Then configure and build coreboot as usual
To modprobe the module use that:
modprobe thinkpad_acpi force_load=1 debug=0xffff fan_control=1 experimental=1
The module should now load automatically...