[Linux apm] Armada laptops: apm: set display: Interface not engaged

Samuel Thibault <[email protected]> Sun, 9 Jun 2002 15:19:04 +0200 (CEST)

Newsgroups	org.kernel.vger.linux-laptop
Message-ID	<Pine.LNX.4.44.0206091518370.1286-300000@youpi>

Hello,

I just bought an Armada E500 and activated apm, but when the screen
should go blank (after a while), "apm: set display: Interface not engaged"
is displayed instead, while BIOS reports that apm is engaged (see flags in
joined file dmesg, which are the same as what /proc/apm reports). The same
occurs under X, and apm events aren't handled properly.

Searching with Google showed that M300 on kernel 2.4.17, and M700 on 2.4.6
had similar troubles.

Therefore, I tried to engage apm at boot time, even if bios reports it
has already done it, and then the "Interface not engaged" never appeared
any more, the screen got blank when it should and apm events ran well...

I think it should be included in kernel, see joined patch

Best Regards,

Samuel Thibault

dmesg (text/plain, 5 KB)

Linux version 2.4.18 (root@bouh) (gcc version 2.95.4 20011002 (Debian prerelease)) #7 ven jun 7 01:10:27 CEST 2002
BIOS-provided physical RAM map:
 BIOS-e820: 0000000000000000 - 000000000009fc00 (usable)
 BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
 BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
 BIOS-e820: 0000000000100000 - 0000000007ff0000 (usable)
 BIOS-e820: 0000000007ff0000 - 0000000007ff3800 (reserved)
 BIOS-e820: 0000000007ff3800 - 0000000008000000 (ACPI NVS)
On node 0 totalpages: 32752
zone(0): 4096 pages.
zone(1): 28656 pages.
zone(2): 0 pages.
Kernel command line: auto BOOT_IMAGE=Linux ro root=303
Initializing CPU#0
Detected 796.544 MHz processor.
Console: colour VGA+ 80x50
Calibrating delay loop... 1589.24 BogoMIPS
Memory: 127016k/131008k available (863k kernel code, 3604k reserved, 296k data, 188k init, 0k highmem)
Dentry-cache hash table entries: 16384 (order: 5, 131072 bytes)
Inode-cache hash table entries: 8192 (order: 4, 65536 bytes)
Mount-cache hash table entries: 2048 (order: 2, 16384 bytes)
Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes)
Page-cache hash table entries: 32768 (order: 5, 131072 bytes)
CPU: Before vendor init, caps: 0383f9ff 00000000 00000000, vendor = 0
CPU: L1 I cache: 16K, L1 D cache: 16K
CPU: L2 cache: 256K
CPU: After vendor init, caps: 0383f9ff 00000000 00000000 00000000
Intel machine check architecture supported.
Intel machine check reporting enabled on CPU#0.
CPU:     After generic, caps: 0383f9ff 00000000 00000000 00000000
CPU:             Common caps: 0383f9ff 00000000 00000000 00000000
CPU: Intel Pentium III (Coppermine) stepping 06
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Checking 'hlt' instruction... OK.
POSIX conformance testing by UNIFIX
mtrr: v1.40 (20010327) Richard Gooch ([email protected])
mtrr: detected mtrr type: Intel
PCI: PCI BIOS revision 2.10 entry at 0xf0478, last bus=1
PCI: Using configuration type 1
PCI: Probing PCI hardware
Unknown bridge resource 2: assuming transparent
PCI: Discovered primary peer bus 04 [IRQ]
PCI: Using IRQ router PIIX [8086/7110] at 00:07.0
Limiting direct PCI/PCI transfers.
Linux NET4.0 for Linux 2.4
Based upon Swansea University Computer Society NET3.039
Initializing RT netlink socket
apm: BIOS version 1.2 Flags 0x03 (Driver version 1.16)
Starting kswapd
pty: 256 Unix98 ptys configured
Serial driver version 5.05c (2001-07-08) with MANY_PORTS SHARE_IRQ SERIAL_PCI enabled
ttyS00 at 0x03f8 (irq = 4) is a 16550A
ttyS02 at 0x03e8 (irq = 4) is a 16550A
PCI: Found IRQ 11 for device 00:09.1
PCI: Sharing IRQ 11 with 00:08.0
PCI: Sharing IRQ 11 with 00:09.0
Redundant entry in serial pci_table.  Please send the output of
lspci -vv, this message (11c1,0445,8086,2204)
and the manufacturer and name of serial board or modem board
to [email protected].
register_serial(): autoconfig failed
block: 128 slots per queue, batch=32
Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller on PCI bus 00 dev 39
PIIX4: chipset revision 1
PIIX4: not 100% native mode: will probe irqs later
    ide0: BM-DMA at 0x3420-0x3427, BIOS settings: hda:DMA, hdb:pio
hda: TOSHIBA MK1016GAP, ATA DISK drive
ide2: ports already in use, skipping probe
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hda: 19640880 sectors (10056 MB), CHS=1299/240/63, UDMA(33)
Partition check:
 hda: hda1 hda2 hda3
eepro100.c:v1.09j-t 9/29/99 Donald Becker http://www.scyld.com/network/eepro100.html
eepro100.c: $Revision: 1.36 $ 2000/11/17 Modified by Andrey V. Savochkin <[email protected]> and others
PCI: Found IRQ 11 for device 00:09.0
PCI: Sharing IRQ 11 with 00:08.0
PCI: Sharing IRQ 11 with 00:09.1
eth0: OEM i82557/i82558 10/100 Ethernet, 00:D0:59:4B:1B:2E, IRQ 11.
  Board assembly 98004c-000, Physical connectors present: RJ45
  Primary interface chip i82555 PHY #1.
  General self-test: passed.
  Serial sub-system self-test: passed.
  Internal registers self-test: passed.
  ROM checksum self-test: passed (0xdbd8681d).
SCSI subsystem driver Revision: 1.00
Linux Kernel Card Services 3.1.22
  options:  [pci] [cardbus] [pm]
PCI: Found IRQ 11 for device 00:04.0
PCI: Sharing IRQ 11 with 00:04.1
PCI: Sharing IRQ 11 with 01:00.0
PCI: Found IRQ 11 for device 00:04.1
PCI: Sharing IRQ 11 with 00:04.0
PCI: Sharing IRQ 11 with 01:00.0
Intel PCIC probe: not found.
usb.c: registered new driver hub
Yenta IRQ list 06b8, PCI irq11
Socket status: 30000006
Yenta IRQ list 06b8, PCI irq11
Socket status: 30000006
NET4: Linux TCP/IP 1.0 for NET4.0
IP Protocols: ICMP, UDP, TCP, IGMP
IP: routing cache hash table of 512 buckets, 4Kbytes
TCP: Hash tables configured (established 8192 bind 8192)
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
VFS: Mounted root (ext2 filesystem) readonly.
Freeing unused kernel memory: 188k freed
Adding Swap: 249472k swap-space (priority -1)
Real Time Clock Driver v1.10e
eth0: 0 multicast blocks dropped.

apm-engage-anyway.patch (text/plain, 2.1 KB)

diff -urN linux-2.4.18/Documentation/Configure.help linux-2.4.18-cor/Documentation/Configure.help
--- linux-2.4.18/Documentation/Configure.help	Fri Jun  7 16:15:50 2002
+++ linux-2.4.18-cor/Documentation/Configure.help	Fri Jun  7 16:38:05 2002
@@ -17368,6 +17368,14 @@
   T400CDT. This is off by default since most machines do fine without
   this feature.
 
+Engage APM at boot time anyway
+CONFIG_APM_ENGAGE_ANYWAY
+  Engage APM at boot time, even if BIOS says it has already done it.
+  Your BIOS may not report correctly whether APM was already engaged
+  at boot time, so that engaging it anyway may be needed, such as on
+  Compaq Armada laptops which print "apm: set display: Interface not
+  engaged" instead of blanking the screen
+
 Make CPU Idle calls when idle
 CONFIG_APM_CPU_IDLE
   Enable calls to APM CPU Idle/CPU Busy inside the kernel's idle loop.
diff -urN linux-2.4.18/arch/i386/config.in linux-2.4.18-cor/arch/i386/config.in
--- linux-2.4.18/arch/i386/config.in	Fri Jun  7 16:16:47 2002
+++ linux-2.4.18-cor/arch/i386/config.in	Fri Jun  7 16:16:58 2002
@@ -281,6 +281,7 @@
 if [ "$CONFIG_APM" != "n" ]; then
    bool '    Ignore USER SUSPEND' CONFIG_APM_IGNORE_USER_SUSPEND
    bool '    Enable PM at boot time' CONFIG_APM_DO_ENABLE
+   bool '    Engage PM at boot time anyway ' CONFIG_APM_ENGAGE_ANYWAY
    bool '    Make CPU Idle calls when idle' CONFIG_APM_CPU_IDLE
    bool '    Enable console blanking using APM' CONFIG_APM_DISPLAY_BLANK
    bool '    RTC stores time in GMT' CONFIG_APM_RTC_IS_GMT
diff -urN linux-2.4.18/arch/i386/kernel/apm.c linux-2.4.18-cor/arch/i386/kernel/apm.c
--- linux-2.4.18/arch/i386/kernel/apm.c	Fri Jun  7 16:16:23 2002
+++ linux-2.4.18-cor/arch/i386/kernel/apm.c	Fri Jun  7 16:16:31 2002
@@ -1711,6 +1711,13 @@
 			return -1;
 		}
 	}
+#ifdef CONFIG_APM_ENGAGE_ANYWAY
+	else {
+		error = apm_engage_power_management(APM_DEVICE_ALL, 1);
+		if (error)
+			apm_error("engaging power management anyway", error);
+	}
+#endif
 
 	if (debug && (smp_num_cpus == 1)) {
 		error = apm_get_power_status(&bx, &cx, &dx);