You are not logged in.
Hi there.
It's been two months or so that I have a strange issue with font drawing. Here is an example: http://imgur.com/idRBe.png - As you can see, some characters are broken. But:
- the way it breaks is random, it will change if I restart the app
- it is not restricted to firefox
- I have two laptops based on Intel graphics, and both have the problem
- Sometimes, the corruption is much worse, such as a complete line completely broken (sorry no screenshot)
Searching around, I didn't find much ... Is anyone having the same problem ? Can you guys help me troubleshoot this ?
$ lspci
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
02:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5752M Gigabit Ethernet PCI Express (rev 02)
03:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG [Golan] Network Connection (rev 02)
15:00.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
15:00.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE 1394 Host Controller
15:00.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)
15:00.3 SD Host controller: Texas Instruments PCIxx12 SDA Standard Compliant SD Host Controller
Offline
Hi,
I've been experiencing your very same problem since August. I can confirm the font corruption affects different applications (as for instance midori, emacs...) and it changes time to time. I have an Intel video card as you.
Have you figured out how to solve the problem?
Best Regards, Andrea
Offline
Unfortunately, no. But it's good to hear that I'm not alone !
I guess we are not the only intel users on this forum, yet you are the first one to reply. Maybe we can pinpoint what our installations have in common ? The problem might be somewhere else ... Where can can we start ?
Offline
I've just found this - the description seems to correlate with our bug:
Offline
Hi,
nice to hear you. The url you post seems to fit our problem, even if I actually do not experiment any hang of my laptop. My lspci output is:
00:00.0 Host bridge: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
00:00.1 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
00:00.3 System peripheral: Intel Corporation 82852/82855 GM/GME/PM/GMV Processor to I/O Controller (rev 02)
00:02.0 VGA compatible controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02)
00:02.1 Display controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 03)
00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 03)
00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 03)
00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 83)
00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 03)
00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller (rev 03)
00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 03)
00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 03)
02:03.0 FireWire (IEEE 1394): Agere Systems FW322/323 (rev 61)
02:05.0 Ethernet controller: Broadcom Corporation BCM4401 100Base-T (rev 01)
02:06.0 Network controller: Intel Corporation PRO/Wireless LAN 2100 3B Mini PCI Adapter (rev 04)
02:09.0 CardBus bridge: Texas Instruments PCI1510 PC card Cardbus Controller
It seems to me that the bug is related with some issues about GPU hang, that is looking at my dmesg:
[drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... GPU hung
render error detected, EIR: 0x00000000
[drm:i915_do_wait_request] *ERROR* i915_do_wait_request returns -5 (awaiting 166378 at 166377)
and Xorg.0.log
[ 1820.071] (EE) intel(0): Detected a hung GPU, disabling acceleration.
All these errors have appeared since late July system update that affected the intel drive and the kernel. I have been forced to downgrade the kernel to 2.6.34 to be able to get xorg work with KMS enabled.
Actually things have been getting better later on with some updates , but still I get some problems (as for instance wrong fonts or update in lxde-terminal). The worst is for me emacs, which is a complete mess as soon I start editing: the text is not refreshed correctly and all fonts mess up, while forcing refresh (say iconizing and maximizing) things are ok again.
So, my impression is a wrong or corrupted refresh of fonts that actually do the mess.
Andrea
Offline